# Contributed Talks (Abstracts)

- Augusto Smerzi — Interferometry 1.0: Theory (Lecture 2, notes)fomo2021 Lecture2 Augusto SmerziDownload
- 2 PhD Studentships in Quantum Matterwave Optics (nanoLace)The PhD students will perform their research at IESL-FORTH and be enrolled in the University of Crete. They will receive training from the experienced matterwave group at IESL. At the start they attend one or two dedicated summer schools (Les Houches, FOMO etc) and later on attend one or two international conference per year. Additional skills training ...
- A password protected page for the participantsThere is now a password protected page for the participants only. There you will find more information on how to see the videos and how to submit your abstract etc.
- Abbas, Hayat — Observation of quantum fluctuations via position to polarization converterHybrid quantum system is used to observe the quantum effects like quantum fluctuations. It consists of an optomechanical system where a micromechanical membrane is strongly coupled to a high finesse cavity using position to polarization converter and couple it into Rb atoms.
- Abidi, Mouine — Quantum NavigationInertial measurements are the backbone for any highly accurate trajectory determination by tracking and integrating accelerations and rotation rates in all three spatial directions. In principle, inertial navigation provides autonomy and is therefore particularly attractive in areas without a line of sight to satellites (e.g. in buildings, tunnels, or in space) as required by GNSS-based ...
- Antolini, Nicolo’ — Dimensional Crossover in superfluid – supersolid quantum phase transitionThe supersolid is a counterintuitive state of matter where atoms, arranged in a periodic crystal-like structure, can still flow coherently as they do in a superfluid. The supersolid has been recently observed in trapped quantum gases of strongly dipolar atoms, emerging from the crystallization of a superfluid Bose-Einstein condensate. In this work, we study for ...
- Antony, Vidhu Catherine — Analysis of the Optical Visibility of Graphite on different substrates and Van-der-Waals Hetero-structuresThe marked visibility of graphene is due to the phase shift in the interference colour. The study is based on the analysis of graphene visibility on various substrates and hetero-structures such as transition metal dichalcogenides (TMDCs) like Molybdenum Disulphide (MoS2) and hexagonal Boron Nitrite (h-BN). The visibility of graphene depends on the type of substrate, the ...
- Application deadline approachingThe application deadline on the 14/6/2021 is rapidly approaching. So far the response has been very good with some very strong applications from students from as far as India, China, the UK, Germany and France.
- Assendelft, Joep — Squeezing momentum states for atom interferometryWe are working on a method to realise the creation of squeezed momentum states that can be used for atom interferometry. The idea behind the method is to perform a probing measurement on a narrow transition in the dispersive regime inside a ring cavity, such that we measure the relative population of the two momentum ...
- Atkocius, Vilius — Ring lattice trap for neutral atoms with RF-dressed time-averaged adiabatic potentialsWe are working towards a matter-wave interferometer based on Sagnac effect that requires atoms to traverse an enclosed path to accumulate phase. Our scheme relies on time-averaged adiabatic RF-dressed potentials (TAAP) to guide neutral atoms around a circular path which will provide a scalable approach towards building a compact atom-based rotation sensor. I will present ...
- Augusto Smerzi — Interferometry 1.0: Theory (Lecture 1, Slides)Fomo2021 Lecture1 Augusto SmerziDownload
- Augusto Smerzi — Interferometry 1.0: Theory (Lecture 2, notes)fomo2021 Lecture2 Augusto SmerziDownload
- Augusto Smerzi (Speaker at FOMO2021)Augustois Director of Research at the Istituto Nazionale di Ottica, CNR-INO and head of the Theory of Quantum Information Group. at the QSTAR – Quantum Science and Technology in Arcetri. His research interests mainly focus on the theory of quantum enhanced interferometry, the dynamics of ultra cold gases andthe foundations of quantum mechanics.
- Bandarupally, Satvika — Atom Interferometry based on narrow linewidth transitions in Sr and CdAtom interferometers with their extremely high sensitivity to inertial forces are an excellent method for investigating and understanding gravity and its gradi- ents. Due to the lack of a unified theory which puts the quantum mechanical nature of the world along with gravitational interactions (best explained by gen- eral relativity), studying gravity using quantum mechanical ...
- Béguin, Ashley — Large momentum transfer atom interferometer using sequential Bragg diffractionLight pulse atom interferometers are implemented for precision measurements in various areas such as gravito-inertial measurements or measuring fundamental constants. In addi- tion, atom interferometers with an increased sensitivity are potential candidates for testing fundamental physics in gravitation, dark sector physics, or for gravitational waves detection. In order to increase their sensitivity, a promising idea ...
- Ben Aicha, Yosri — Bragg-Based Atom Interferometry with Overlapped Spatial FringesBragg-based atom interferometry is the standard technique for atom interferometry using Bose-Einstein condensates as an atomic source. However, as it is unable to distinguish between the two output ports of the interferometer at the final beam splitter pulse, a minimum separation time between the two clouds is required. This reduces the interferometer time compared ...
- Bernard, Jeanne — Progress towards the development of a cold-atom inertial measurement unit for onboard applicationsCold atom interferometers (AIs) have proven to be extremely sensitive and accurate inertial sensors measuring gravity . Unlike classical sensors, they do not require any calibration and exhibit an inherent long-term stability and accuracy : they are promising candidates for geodesy, geophysics or inertial navigation. We present our progress towards the development of ...
- Biagioni, Giulio — Rotation of a dipolar supersolidSupersolids are a fundamental state of matter in which the same atoms that form a crystalline lattice are also responsible for the coherent flow of mass, typical of superfluids. In 2018, my group realized for the first time a supersolid phase in a quantum gas of strongly dipolar atoms. During the talk, I will focus ...
- Boegel, Patrick — Atom interferometry aboard the International Space StationAtom interferometers based on Bose-Einstein condensates are expected to be exquisite systems for quantum sensing applications like Earth observation, relativistic geodesy, and tests of fundamental physical concepts. Since the sensitivity of most atomic sensors scales quadratically with the interrogation time, it is beneficial to extend the free fall time by working in a microgravity environment. We report here on a ...
- Bouyer, Philippe — Devices: Portable gravimeters (Video)Download Link
- Brimis, Apostolos — Tornado wavesStructured light has recently attracted the interest of scientific society while it is possible to control it in all its degrees of freedom and dimensions. I will present light spiraling like a tornado over its propagation. Such structured light can be generated by superimposing abruptly auto- focusing ring-Airy beams that carry orbital angular momentum of ...
- Buchmüller, Oliver — Fundamental Forces (Video)Download Link More Info: Fundamental Forces Lecture — AION and AEDGE (pdf) Fundamental Forces — The SM, The Higgs Discovery, and GW Intro.pdf
- Buchmüller, Oliver — Fundamental Forces — AION and AEDGE (Slides)Lecture Slides (pdf) FOMO2021-Buchmueller-Fundamental-Forces-Lecture-AION-and-AEDGE-Download Lecture Slides (pptx) FOMO2021-Buchmueller-Fundamental-Forces-Lecture-AION-and-AEDGE-Download
- Buchmüller, Oliver — Fundamental Forces — The SM, The Higgs Discovery, and GW Intro (Slides)Lecture Slides (pdf)FOMO2021-Buchmueller-Fundamental-Forces-The-SM-The-Higgs-Discovery-and-GW-IntroDownload Lecture Slides (pptx) FOMO2021-Buchmueller-Fundamental-Forces-The-SM-The-Higgs-Discovery-and-GW-IntroDownload
- Chakraborty, Pratik — Aspects and Applications of Atom Interferometry for mid band frequency (0.1-10 Hz) Gravitational Waves detection.Since the first confirmed detection of gravitational wave (GW150914) on 14 September 2015 by LIGO, the detection of gravitational waves by terrestrial LASER interferometric detectors became a routine job. Despite their high sensitivity (100 Hz region), it is important to consider that such terrestrial interferometric detectors lose their sensitivity in the lower frequency region of ...
- d’Armagnac, Quentin — Multi-axis quantum sensor for inertial navigationThe iXAtom laboratory aims at improving classical inertial sensors with quantum technologies. In particular, my PhD focuses on developing a 3-axis hybrid inertial navigation system. The atom interferometer allows to measure the inertial components with high accuracy and no bias, while classical sensors have a high dynamic range and provide continuous measurements. If the 3-axis hybrid ...
- de Almeida, Alexandre A. C. — Generation of correlated forward four-wave mixing signals with cold atomsWe report preliminary results on the generation of two correlated Forward Four-Wave Mixing (FFWM) signals using cold rubidium atoms. To induce the FFWM process, we use two almost copropagating beams, with linear and orthogonal polarization. We calculate the time-delay intensity correlation function between all four fields to detect correlation and anticorrelation. In addition, the ...
- de Almeida, Ricardo Costa — Entanglement certification of many-body systems with quench dynamicsEntanglement is central to the modern understanding of quantum systems and the primary resource for upcoming quantum technologies. However, a potential bottleneck for future advances is the need for scalable protocols to detect and characterize entanglement. In particular, there is an increasing demand for procedures that can certify the presence of entanglement in quantum many-body systems. The quantum Fisher information(QFI) is ...
- Delvecchio, Michele — Static error compensation for multi-level interacting quantum systemsControlling experimental quantum systems is one of the challenges in the last years, both from a fundamental and practical perspective. One of the most significant application is the control of interacting systems, for instance, qubits in a quantum computer. In the latter case, in particular, one wants to perform quantum operations without errors, namely with ...
- Donelli, Beatrice — Self-induced Josephson oscillations in a supersolid dipolar quantum gasSupersolid is a state of matter in which coexist both a periodic modulation, characteristic of the solid state, and the ability of the superfluid to flow without any friction. Its theoretical prediction dates back to 1960s, but it was experimentally observed for the first time two years ago, in a dipolar quantum gas. My research ...
- Dunjko, Vanja — Quantum advantage in precision measurement with matter-wave solitonsOne-dimensional ultracold Bose gases with attractive atom-atom interactions support bright matter-wave solitons. Once a fundamental soliton is created, a four-fold quench in the interaction strength produces two daughter solitons. These, due to quantum fluctuations atop the mother soliton, are born in a coherent macroscopic superposition, their relative position described by a nearly minimum-uncertainty wavefunction. We show how this state can be ...
- Eichelmann, Marcel — Theoretical investigation of the impact of semiconductor quantum dots on the morphology of wetting-layer statesThe excitation of semiconductor quantum dots often involves an attached wetting layer with delocalized single-particle energy eigenstates. These wetting-layer states are usually appro- ximated by (orthogonalized) plane waves. We will discuss why this approach even in the simpliest case of one (lens-shaped) quantum dot on the wetting layer is insufficient. Quantum states associated to the ...
- Elertas, Gedminas — Matter-wave Atomic Gradiometer Interferometric Sensor (MAGIS)Matter-wave Atomic Gradiometer Interferometric Sensor (MAGIS) will be the largest vertical atom interferometry experiment, under construction at Fermilab. It consists of three 10 m atom interferometers across a 100-meter baseline. MAGIS will search for ultralight dark matter, test quantum mechanics in new regimes and serve as a technology demonstrator. The MAGIS-100 experiment is an intermediate ...
- Eneriz, Hodei — Loading and cooling in an optical trap via dark statesRecently self-emergence phenomena, like glassiness and crystallization, have been extensively studied using pumped condensed atomic samples, coupled to a high finesse optical resonator. So far most of these experiments have been realized in standing wave cavities, which impose the resonator geometry to the lattice being formed by the atoms and the light scattered into the ...
- Examilioti, Pandora — Linear discrete diffraction and self-focusing in nonlinear latticesIn this work, in the context of coupled-mode theory, I studied the discrete diffraction and the self-focusing effect in nonlinear optical lattices, under single-cite excitation. In the one and two-dimensional discrete diffraction, the spreading of the beam occurs due to the coupling between adjacent waveguides, while for a critical power and above the effect of ...
- Famà, Francesca — Towards continuous superradiance with a hot atomic beamContinuous superradiant lasers have been proposed as next generation optical atomic clocks for precision measurement, metrology, quantum sensing and the exploration of new physics . Superradiance is a collective phenomenon resulting in an enhanced single atom emission rate . A way to provide the required phase synchronization is coupling a cold cloud of atoms to a ...
- Faraji, Elham — Properties of electronic currents along DNA fragments through light pumpingWe are working on a model partly borrowed from the standard Davydov-Fröhlich models originally introduced to account for electron-phonon interaction in macromolecules. Under the action of an external electromagnetic field on a DNA protein, the energy transferred to the electron shows an electronic current which can display either a spreading frequency spectrum or a sharply ...
- Farrell, Liam — Analogue Hawking radiation as a quantum causticIn optics, caustics are bright, sharp lines and shapes created by the natural focusing of light. Some examples include rainbows, the wavy lines on the bottom of swimming pools, and the patterns produced by gravitational lensing. The intensity at a caustic diverges in the classical ray theory, but can be smoothed by taking into account ...
- Favalli, Tommaso — Time from Quantum EntanglementThe idea that time may emerge from quantum entanglement originated from a mechanism proposed in 1983 by Don Page and William Wootters to solve the, so called, “problem of time” that arises in the context of canonical quantization of gravity. The Page and Wootter (PaW) theory consists in dividing the total Hilbert space into ...
- Fiedler, Johannes — The role of dispersion forces in matter-wave scattering experimentsDispersion forces, such as van der Waals forces between neutral particles or Casimir-Polder forces between neutral particles and dielectric surfaces, are caused by the ground-state fluctuations of the electromagnetic field. They can be understood via an exchange of virtual photons that are generated as a dipole response of the particle due to the vacuum fluctuation of the field surrounding it. ...
- Final dates for FOMO2022The next FOMO will take place 2022 at the Abdus Salam International Centre for Theoretical Physics (ICTP) in Trieste. The Summer School will be 12-16 September 2022 and the conference 19-23 September 2022
- Geiger, Remi — Interferometry 1.0: Experiments (Video 1)Geiger, Remi — Interferometry 1.0: Experiments (Video 1) Download Video
- Geiger, Remi — Interferometry 1.0: Experiments (Video 2)Download here
- Gerstenecker, Benedikt — Ultracold Caesium on an Atomchip: An Atom Interferometer with Tunable InteractionsThe matter-wave properties of atoms and the macroscopic behavior of Bose-Einstein condensates make interference experiments with ultracold atoms a useful tool for both fundamental research and metrology applications. A unique design allows us to combine the advantages of atomchip technology with the flexibility of optical traps and furthermore the favorable magnetically induced Feshbach resonances in ...
- Giachetti, Guido — Presence of SSB and BKT scaling in d= 2 long-range XY modelIn the past decades considerable efforts have been made in orderto understand the critical features of long-range interacting models, i.e. those where the couplings decay algebraically as r^(−d−σ) withσ >0. According to the well-established Sak’s criterion for O(N) models, the short-range critical behavior survives up to a given σ∗≤2. However, the applicability of this picture ...
- Grinin, Alexey — QED tests and fundamental constants from frequency comb spectroscopy on hydrogen and deuteriumCurrent calculations and experiments on quantum electrodynamics (QED) both achieve twelve digits of accuracy making it an excellent test ground of the fundamental physics and searches for new physics. Two fundamental constants are obtained from hydrogen spectroscopy with highest precision: the Rydberg constant and the (rms) proton charge radius. While coherent sources in the deep ...
- Gulhane, Shreyas — On building matter-wave interferometer of Caesium atoms for the ‘g’ measurementBuilding local probes of gravity is of interest for both fundamental and environmental research. A compact as well as precise device for this purpose from the perspective of mobility is the demand and matter-wave interferometry is one of the interesting possible answers. The central idea of our setup is to make a gravimeter incorporating levitated ...
- Hainge, Joshua — Caustics versus chaos in a kicked Bose-Einstein condensateWe numerically study the quantum dynamics a bosonic Josephson junction (a Bose-Einstein condensate in a double-well potential) in the context of random periodic driving of the tunnel coupling. In particular, we examine how caustics which dominate the wavefunction in Fock space of the undriven system are affected by kicks which are random in both ...
- Hanımeli, Ekim T. — Combining Bragg and Raman processes for novel interferometry topologiesBragg and Raman are the two most important techniques to form beam splitters in atom interferometry. While often used for the same purpose, the two techniques have different physical characteristics that can be exploited in different ways. This allows two methods to be combined to create interesting novel interferometry topologies, such as quantum clock interferometry. ...
- Hawkins, Leonie — MAGIS-100: 100m atom interferometric quantum sensorMAGIS-100 is a 100 m scale quantum sensor to be built at Fermilab. It will be the world’s largest atom interferometry experiment and will be used to search for physics beyond the standard model. MAGIS will be composed of multiple atom interferometers spaced across a single baseline to measure a differential phase shift, allowing many ...
- He, Yuanlei — Multifrequency Slower for MOTThis project will give an approach to using multiple frequencies of light to enhance the loading of a Magneto-Optical Trap (MOT). An electro-optical modulator will be used to produce frequency and intensity tunable sidebands, enabling the nature of slowing to be controlled, and thus optimized, by the user. There are some basic computational simulations that have been done ...
- Hindley, Sam — MAGIS-100: A Matter-wave Atomic Gradiometer with Sensitivities to Dark MatterMAGIS-100 is a next-generation atom interferometer under construction at Fermilab that aims to explore fundamental physics over a 100-metre baseline, using the latest atomic clock technologies and new forces, while also providing an opportunity to test quantum mechanics at new length scales. The 100-metre baseline ...
- Hosten, Onur — Interferometry 2.0: Entanglement (Video)Download link
- Hsu Chung Chuan (Michael) — A compact and laser-induced source of ultracold strontium atomsWe demonstrate a compact approach to generate ultracold strontium atoms and report trapping of 4.5 million atoms with a total system size of 0.5m$^3$. A novel ablation technique is implemented where pure strontium solid granules are ablated to produce atomic vapor, which is then loaded and trapped in a 3D magneto-optical trap (MOT) within a ...
- Junca, Joseph — The MIGA project: measuring gravity strain with atom interferometryThe MIGA project aims at using atom interferometry as a tool to study geophysical signals and demonstrate the applicability of quantum sensors to build a large scale instrument able to conduct high sensitivity gravity strain measurements. Currently under construction at the LSBB (low noise underground laboratory) in Rustrel in southern France, MIGA will comprise 3 atom sources connected by ...
- Kamp, Denise — Quantum bifurcations in a Bose-Einstein condensateWe model an atomic Bose-Einstein condensate (BEC) near an instability, looking for universal features. Instabilities are often associated with bifurcations where the classical field theory provided here by the Gross-Pitaevskii equation predicts that two or more solutions appear or disappear. Simple examples of such a situation can be realized in a BEC in a double ...
- Kang, Seji — Inertial sensing using an expanding atomic point sourcePoint source atom interferometry (PSI) provides a compact tool to measure rotation and acceleration from phase differences between two atomic states. In an expanding laser-cooled atomic source within the π/2 – π – π/2 Raman pulses, rotation in the perpendicular plane to the Raman beams generates interferometer phases leading to spatial fringes in the atomic state ...
- Kolb, Matthias — Towards a cold atom experiment with potassium for realizing the ‘Quantum Klystron’ and levitated atom interferometryWe develop a setup suitable for cavity enhanced levitated atom interferometer which is capable of interaction times of several seconds . The Quantum Klystron mimics electromagnetic radiation by the ...
- Kristensen, Sofus Laguna — Properties of Raman beamsplitters using phase modulated light in an optical cavityUsing an optical cavity to perform atom interferometry offers several advan- tages; the high-quality wavefronts allows for very long coherence time (20 s) of a spatially seperated superposition held in an optical lattice, and the resonant power enhancement allows the use of simpler laser systems with a fiber opti- cal modulator to generate laser frequency ...
- Kumar, Ankit — Jensen’s inequality and the nontrivial dynamics of fundamental forcesRutherford scattering is usually described by treating the projectile either classically or as quantum mechanical plane waves. We treat them as localised wave packets and study their head-on collisions with the stationary target nuclei. A comprehensive study of the quantum solutions reveals that the paradigmatic Rutherford scattering experiment is asymmetric in time. This nonclassical feature is ...
- Lecture Notes and Video of Smerzi’s First Lecture are AvailableWe have made available the Lecture Notes and Video of Smerzi’s first lecture. You can find them on the programme page.
- Lezeik, Ali — VLBAI : Testing Fundamental PhysicsThe universality of free fall or Einstein’s equivalence principle (EEP) remains valid despite attempts to find deviations away from it. It is expected through certain theories, that quantum mechanics and general relativity can be reconciled, breaking EEP. The VLBAI presents a state-of-the-art experiment to push the current limits using matter-wave interferometry. Dropping atoms through a ...
- Li, Jing — A Feshbach engine on nonlinear coupled density-spin Bose-Einstein condensatesFirstly, I will introduce a thermodynamic cycle using a Bose–Einstein condensate (BEC) with nonlinear interactions as the working medium. Exploiting Feshbach resonances to change the self-interaction strength of the BEC allows one to produce work by expanding and compressing the condensate. Then I investigate the effect of the shortcut to adiabaticity on the efficiency and ...
- Li, Vyacheslav — Frequency offset lockingApplications of lasers in quantum metrology require precise control of the laser frequency. This is usually achieved by locking the frequency of a slave laser at a tunable offset from a master laser. Here we present a new scheme for a robust and high precision laser offset frequency locking. A hybrid frequency discriminator generates an ...
- Liebmann, Tobias — Controlling multipole moments of magnetic chip trapsMagnetic chip traps are a standard tool for trapping atoms . While magnetic traps do provide good confinement potentials, they are not necessarily harmonic, in particular, they can exhibit strong cubic anharmonicity. In ...
- Lisa Wörner — Devices — MW Interferometry in Space (Lecture Slides)Lisa-Worner-Devices-MW-Interferometry-in-SpaceDownload
- Lisa Wörner — Devices — MW Interferometry in Space (Lecture Video)Download Link
- Lisa Wörner (Speaker at FOMO2021)Lisa Wörner works at the ZARM – Center for Applied Space Technology and Microgravity, University of Bremen in the Space Technology Group. is a researcher with interests in different quantum mechanical areas. Her main focus is BECCAL (Bose Einstein Condensate and Cold Atom Laboratory), a joint mission between NASA and DLR to investigate atom optics under microgravity. In this capacity she is striving to advance fundamental quantum ...
- López, Luis — Vibrational Postprocessing Module for a Quantum GravimeterA quantum gravimeter measures the absolute acceleration of gravity g using atomic interferometry. In the interferometric process, a cold cloud of 87Rb atoms interact with two counter-propagating laser beams, which are produced from a single beam that is reflected off a mirror located at the end of the gravimeter’s flight tube. Thus, to achieve good precision on g among other ...
- Luca Pezzé — Interferometry 1.1: Quantum Statistics and information theory (Lecture Notes 1)Luca-Pezze-Interferometry-1.1-Quantum-Statistics-and-information-theory-lecture-1Download
- Luca Pezzé — Interferometry 1.1: Quantum Statistics and information theory (Lecture Notes 2)Luca-Pezze-Interferometry-1.1-Quantum-Statistics-and-information-theory-Lecture-2Download
- Luca Pezzé — Interferometry 1.1: Quantum Statistics and information theory (Lecture Notes 3)Luca-Pezze-Interferometry-1.1-Quantum-Statistics-and-information-theory-Lecture-3Download
- Luca Pezzé (Speaker at FOMO2021)Luca Pezzé is at QSTAR – Quantum Science and Technology in Arcetri of the Istituto Nazionale di Ottica, CNR-INO at LENS. His research activity focuses on the theory of quantum-enhanced interferometry, entanglement and quantum gases.
- Luo, Chengyi — A Guided Matterwave Interferometer with Cavity Aided QND ReadoutCavity-QED based approaches have succeeded in generating large amounts of entanglement enhancements beyond the standard quantum limit (SQL), which sets a fundamental imprecision on all quantum sensors with unentangled atoms and ...
- Malitesta, Marco — Distributed Quantum Sensing with Squeezed-Vacuum Light in a Configurable Network of Mach-Zehnder InterferometersMach-Zehnder interferometry using squeezed-vacuum light is an archetype of quantum-enhanced single-phase sensing. Here we propose and study a direct generalization for the estimation of an arbitrary number of phase shifts in d ≥ 1 distributed Mach-Zehnder interferometers (MZIs). In this case, the squeezed-vacuum is split between the d modes of a linear (splitting) network, each output of the network ...
- Manz, Stephanie — Interferometry 2.0: Interactions (Lecture Slides)FOMO2021-Stephanie-Manz-Interferometry-2.0-Interactions-Download
- Manz, Stephanie — Interferometry 2.0: Interactions (Video)Download Link
- Mark Baker — Devices: Painting Optical Potentials (Lecture Slides)Mark-Baker-Devices-Painting-Optical-PotentialsDownload
- Mark Baker — Devices: Painting Optical Potentials (Video)Download link
- Mark Baker (Speaker at FOMO2021)Mark Baker is a researcher in Quantum Technologies with DSTG (Defence Science and Technology Group), Australia. He is also Research Fellow & Honorary Senior Fellow at the School of Mathematics and Physics of the The University of Queensland.
- Martinez, Victor — Mass defect, time dilation and second order Doppler effect in trapped-ion optical clocksIn this work we present a low-order relativistic correction to the multipolar atom-light Hamiltonian for two bound particles corresponding to a simple model for hydrogen-like atoms and ions. From this result, we can systematically predict frequency shifts in atomic clocks based on trapped ions due to the mass defect. We derive the fractional frequency shift ...
- Meyer, Bernd — Transfering entanglement from spin to momentum spaceEntanglement has been generated in different atomic systems to improve the sensitivity of phase estimation measurements . However, it is challenging to make use of this entanglement in inertially sensitive atom interferometers. One approach is to generate the entanglement directly in momentum space using nonlinear interactions in Bose-Einstein condensates . In our approach, we first create highly entangled ...
- Michael Holynski (Speaker at FOMO2021)Michael Holynski is a Senior Lecturer in the Cold Atoms research group, part of the Midlands Ultracold Atom Research Centre, and the UK National Quantum Technology Hub in Sensors and Metrology. He leads the Atom Interferometry group, where he focuses on gravity gradient sensors and their use within applications. This includes developing gradiometers for use in ...
- Millen, Nathan — Teledyne e2v – Quantum Gravity SensorsTeledyne e2v have been developing a portable gravity gradiometer for use in civil engineering applications. In this talk I will go over the need for such a system and how the system uses matter-wave interferometry to produce increased sensitivity, stability and resolution for gravity gradient measurements.
- Mishra, Charu — Guidance of trapped clock states towards realization of rotation sensorTrapped and guided Sagnac interferometer have an advantage of achieving large effective area compared to free space Sagnac interferometer, which can increase the sensitivity of the rotation sensor. We are in the process of building such a rotation sensor. Our scheme employs atom chip that produce quadrupole fields in ring geometry and radio frequency chip ...
- Monjaraz, Cristian de Jesús López – Towards the implementation of a Dual Quantum Gravimeter based on 133Cs and 87Rb atomsAtom interferometry with neutral atoms has proven to be highly sensitive to inertial effects and this has made it a very significant area of research. Gravimeters based on atomic interference not only offer the ability to measure the value of local acceleration g with high accuracy, but also help validate highly relevant principles such as ...
- Morrison, Rhys — A Radio-Frequency Dressed Ringtrap for Cold Atom InterferometryI present a scheme that would allow for the controlled motion of cold atoms around a Sagnac interferometer through use of Radio-Frequency (RF) dressed magnetic traps. Multiple interesting geometries of traps have already been created for atoms in the microkelvin range. This talk will aim to give a brief overview of RF dressed traps, give ...
- Mukhopadhyay, Annesh — Probing zero-momentum excitations in the stripe phase of a spin-orbit coupled Bose-Einstein condensateRaman dressing of Bose-Einstein condensates is a highly flexible technique that pro- vides access to the study of interesting quantum phases. In a narrow range of parameters, an exotic supersolid-like stripe phase exists that combines superfluid properties with the breaking of translational symmetry. By using a weak optical lattice in combination with spin-orbit coupling, the ...
- New, Joshua — CMOS Atom Chips: A lab on a ChipCold atom interferometry has proven to be a promising technology for creating high precision inertial sensors, measuring fundamental constants and testing physics such as the WEP. Currently, cold atom devices are constrained by their size, requiring an entire lab to function which limits portability. A route to overcome this issue is with fully integrated atom ...
- Odelli, Manuel — Design of High Fidelity Quantum Waveguides via Shortcuts To AdiabaticityQuantum waveguides are one of the key components in the development of quantum technologies as they are crucial in the transmission of information. The progressive miniaturization of quantum chips requires the waveguides to follow certain paths and so they need to be bent in order to be accommodate onto the chip. Often, waveguides are formed by two straight ends ...
- Oliver Buchmueller (Speaker at FOMO2021)Oliver Buchmueller is a scientist and professor of physics at the Faculty of Natural Science, Imperial College London. Buchmueller is presently serving as one of the lead scientists on the CMS experiment at CERN’s LHC, the Principal Investigator of the Atom Interferometer Observatory and Network (AION) and also one of the lead authors at Atomic Experiment for Dark Matter and Gravity ...
- Ome, Md. Kamrul Hoque –Galilean Invariance and Lattice Dynamics in a Zeeman LatticeQuantum gases at near absolute zero temperature exhibit pronounced quantum mechanical effects which make them powerful testbeds for probing complex dynamics connected to open questions in other areas of modern physics, such as quantum optics, quantum information, or condensed matter physics. In this work, we demonstrate one of the applications of quantum gases to the ...
- Onur Hosten — Interferometry 2.0: Entanglement (Lecture Slides)FOMO2021-Onur-Hosten-Interferometry-2.0-lecture-1Download
- Onur Hosten (Speaker at FOMO2021)Onur Hosten is head of the Quantum Sensing with Atoms and Light Group at the Institute of Science and Technology Austria (IST Austria). He received his PhD from the University of Illinois at Urbana-Champaign and then worked as a postdoc and Research Associate at Stanford University, Palo Alto. His group aims to develop innovative techniques to control quantum properties of atomic ...
- Pareek, Vinay — Cavity Enhanced MicroscopyImaging is a vital aspect of research in biology and physics. Many interesting samples are very difficult to image because of their minimal interaction with light. I am developing Cavity Enhanced Microscopy (CEMIC) as a novel imaging technique for ultra-low optical density samples. After establishing the technique using artificially created structures, I will ...
- Pasatembou, Elizabeth — Mars, Dark Matter, and Everything in-betweenFor fundamental physics to go forward, good use of modern technologies and tools needs to be made. Machine learning and quantum technologies are two examples of tools that can be used to drive physics forward. With ever-expanding datasets coming from space missions, it is becoming increasingly more difficult for scientists to manually analyse data. I ...
- Pedalino, Sebastian — High-mass matter-wave interferometryVienna’s Long-Baseline Universal Matter-wave Interferometer (LUMI) has successfully demonstrated interference of massive molecules consisting of up to 2000 atoms and with masses up to 28.000 amu. LUMI’s high force sensitivity of 10-26 N has also been used to sense electronic, optical, magnetic and structural properties of a very diverse class of particles. I will discuss ...
- Perez, Veronica — Grid-based holograms for matter waves lithography: fabrication parameters and resolutionGrid-based binary holography (GBH) is an attractive method for patterning with light or matter waves. It is an approximate technique in which different holographic masks can be used to produce similar patterns. Mask-based pat- tern generation is a critical and costly step in microchip production. The next- generation extreme ultraviolet- (EUV) lithography instruments with a ...
- Petrucciani, Tommaso — Spatial Bloch oscillations of a quantum gas in a “beat-note” superlatticeIn this work, I report the realization of a novel optical lattice for the manipulation of ultra-cold atoms, where arbitrarily large separation between the sites can be achieved without renouncing to the stability of retroreflected lattices. Superimposing two short-wavelength optical lattices with commensurated wavelengths, about 1µm each, I realize an intensity periodic pattern with a beat-note like ...
- Pezze, Luca — Interferometry 1.1: Quantum Statistics and information theory (Video 1)Download Link
- Pezze, Luca — Interferometry 1.1: Quantum Statistics and information theory (Video 2)Download Link
- PhD Position in Guided Matterwave InterferometryBackground: In matterwave interferometry, atoms are put into a superposition of two different momentum states. They are then made to travel in two different paths (yes, during part of the interferometry sequence every individual atom is at two distinct places at the same time) before being recombined. Depending on the phase accumulated in the two different ...
- PhD Position: ULTRACOLD 1D FERMI GASES at the ENS ParisA 3 year PhD scholarship and a 2 year postdoc position are open at LKB ENS on the physics of 1D Fermi gases. Quantum physics in lower dimension is strikingly different from its 3D counterparts, and many paradigms governing three-dimensional phenomena fail when the dynamics of particles is confined in one or two dimensions. A celebrated ...
- Philippe Bouyer (Speaker at FOMO2021)Philippe Bouyer is research director at CNRS and deputy director of the Institut d’Optique Graduate School in Bordeaux. He received his doctorate at Ecole Normale Supérieure in 1995. Since then, he has been worked on atom interferometer-based inertial sensor experiments, atom lasers and Anderson localization with cold atoms. His current interests are the study of ...
- Please send in the Abstracts…Just as a small reminder: PLEASE do send in your abstracts! We need to sort and post them. For details consult the participants page.
- PostDoc in Quantum Matterwave Optics on Crete (nanoLace)The Project Recent advances in our ability to generate and manipulate quantum-coherent matterwaves is now ushering in a new era of quantum optics, where the roles of matter and light are almost exactly reversed. We are starting to be able to create almost arbitrary matterwave-images, (de)magnify, and project them. We have recently even been able to ...
- Postdoctoral Fellow in Theoretical and Computational PhysicsWe have an opening for a 2-year fixed-term research position in analytical and computational quantum dynamics of ultracold atoms. Applications are invited for a postdoctoral fellowship in theoretical and computational physics of ultracold few-atom systems. The postdoctoral fellow will work on fundamental aspects of quantum dynamics, semiclassical quantum chaos, and stochastic computational methods applied to strongly correlated ultra-cold atom ...
- Postdoctoral position in experimental quantum optics in BudapestThe Project — The Quantum Optics Group of the Wigner Research Centre for Physics in Budapest is looking for a motivated postdoctoral fellow to perform experimental research in the frame of the Quantum Information National Laboratory of Hungary. The aim of the project is the realisation of an atom based quantum interface to coherently couple low-intensity microwave and optical ...
- Preliminary dates for FOMO2022The next FOMO will take place 2022 at the Abdus Salam International Centre for Theoretical Physics (ICTP) in Trieste, likely on the 12-23 September 2022. Application Pending. About ICTP For more than 50 years, the Abdus Salam International Centre for Theoretical Physics (ICTP) has been a driving force behind global efforts to advance scientific expertise in ...
- Puthiya Veettil, Vishnupriya — Frequency stabilization using Saturation Absorption Spectroscopy.The aim of the project is to stabilize the Toptica DLC pro laser (780nm) by locking at F=2→F’=2, 3 crossover of 87Rb via Zeeman driving. A saturation absorption spectroscopy setup is designed to obtain the hyperfine levels of Rubidium with Doppler background subtraction. A resonant LC circuit of frequency 511 kHz is used for the ...
- Rajagopalan, Ashwin — Hybridizing an atom interferometer with an opto-mechanical resonatorAtom interferometers can perform absolute measurements of inertial effects with extremely high sensitivities and long term stability in comparison to its classical counterparts. Their measurement accuracy and long term stability have made them an ideal candidate in areas such as inertial sensing and navigation . While performing measurements in dynamic field environments an atom interferometer’s ...
- Remi Geiger — Interferometry 1.0: Experiments (Lecture 1, Notes)fomo2021-Lecture3-Remi-Geiger-NOTESDownload
- Remi Geiger (Speaker at FOMO2021)Remi Geigeris an Associate Professor of Physics at Sorbonne Université (Paris). His research at the SYRTE laboratory(Observatoire de Paris) focuses on the development of atom interferometry techniques serving high precision measurements of inertial effects, both for field applications and for future gravitational wave detectors.
- Remi Geiger: Interferometry 1.0: Experiments (Lecture 1+2, Slides)21F-Geiger-Interferometry-1.0-Experimental-geiger2021interferometryDownload
- Research Assistant (PhD, m/f/d) in the field of Experimental Physics(Salary Scale 13 TV-L, 75 %) In course of the CRC TerraQ, the Institute of Quantum Optics invites applications for the position of a Research Assistant (PhD, m/f/d) in the field of Experimental Physics (Salary Scale 13 TV-L, 75 %) starting as soon as possible. The position is initially limited to 3 years. Responsibilities and duties The “Very ...
- Research Fellow in Cold Atom Gradiometryhttps://tinyurl.com/ztnhxs95 Atom interferometry has become a versatile tool for fundamental research and, more recently, has started to move out of the laboratory towards quantum sensing for a wide range of applications. The atom interferometry group at the University of Birmingham is focused on the development of sensors for the measurement of gravity and gravity gradiometry. The group ...
- Research Fellow on the AION ProjectSee https://tinyurl.com/m96zxm4v Atom interferometry has become a versatile tool for fundamental research and, more recently, has started to move out of the laboratory towards quantum sensing for a wide range of applications. The atom interferometry group at the University of Birmingham is focused on the development of sensors for the measurement of gravity and gravity gradiometry. The ...
- Richaud, Andrea — Vortices with massive cores in a binary mixture of BECsWe analyze a notable class of states relevant to an immiscible bosonic binary mixture loaded in a rotating boxlike circular trap, i.e., states where vortices in one species host the atoms of the other species, which thus play the role of massive cores. The resulting effective Lagrangian resembles that of charged particles in a static ...
- Richaud, Andrea — Vortices with massive cores in a binary mixture of BECsWe analyze a notable class of states relevant to an immiscible bosonic binary mixture loaded in a rotating boxlike circular trap, i.e., states where vortices in one species host the atoms of the other species, which thus play the role of massive cores. The resulting effective Lagrangian resembles that of charged particles in a static ...
- Rodzinka, T — Bose-Einstein Condensate and Bragg diffraction for atom interferometryWe are constructing an atom interferometer with a large momentum separation between the interferometer’s arms. This would significantly improve atom gyroscopes and accelerom- eters sensitivities. Beyond inertial effects, in our group, we are interested in measurements where the macroscopic spatial separation between the two arms is essential. For example, measurements where the influence of fields ...
- Ruhl, Joanna — Lagrange bracket approach to quantum fluctuations in macroscopic parameters of NLS breathersIn the focusing nonlinear Schrodinger equation, multisoliton ”breathers” may be created from a single mother soliton by quenching the strength of the nonlinear interaction. In ultracold-gas realizations, atop the mother soliton there are quantum fluctuations coming from its underlying quantum many-body nature, computable from the Bogoliubov theory. Post-quench, these fluctu- ations become the fluctuations in ...
- Ruhl, Joanna — Lagrange bracket approach to quantum fluctuations in macroscopic parameters of NLS breathersIn the focusing nonlinear Schrodinger equation, multisoliton ”breathers” may be created from a single mother soliton by quenching the strength of the nonlinear interaction. In ultracold-gas realizations, atop the mother soliton there are quantum fluctuations coming from its underlying quantum many-body nature, computable from the Bogoliubov theory. Post-quench, these fluctu- ations become the fluctuations in ...
- Safeer, S S — Design and development of Electronics modules for a Compact Cold Atom Inertial SystemResearch aim is to develop a compact electronics module for a cold atom interferometer based system using Rubidium atoms (780nm). Laser systems are one of the most critical part of the cold atom system as they have to be stable in terms of optical power, frequency, line width and spectral properties and should also be ...
- Schach, Patrik — Tunneling-based gravimetry with matter-wavesThe measurement of the gravitational acceleration through light-pulse atom interferometers is a current topic for matter-wave based inertial sensing. Such interferometers have been developted in analogy to optical Mach-Zehnder interferometers, where beam splitters and mirrors are realized by diffracting light pulses. In this contribution, we will present two types of tunneling-based gravimeters: The first one ...
- Scheduling open for Students’ PresentationsPlease go to the participants’ area to find the Doodle Link. There you can book your slot for your presentation.
- Seedat, Adam — Optimized beam shapes for atom interferometryThe sensitivity of atom interferometers to detect small changes in gravity is very important. Among other factors, the sensitivity of these devices is limited by the interference fringe contrast. Contrast is itself limited by dephasing, the decoherence of the Rabi oscillations of atoms over time. One method of reducing contrast which hasn’t been explored much ...
- Semakin, Aleksei — Experiments with ultra-low atomic hydrogenWe designed and constructed of a large magnetic trap for storage and cooling of atomic hydrogen operating in the vacuum space of the dilution refrigerator at temperature of 1.5 K. Aiming on a largest volume of the trap we implemented octupole configuration of linear currents (Ioffe bars) for radial confinement, combined with two axial pinch ...
- Simonsen, Veronica P. — The NanoLace project: Grid-based holograms for matter waves lithographyGrid-based binary holography (GBH) is an attractive method for patterning with light or matter waves. It is an approximate technique in which different holographic masks can be used to produce similar patterns. Mask-based pat- tern generation is a critical and costly step in microchip production. The next- generation extreme ultraviolet- (EUV) lithography instruments with a ...
- Simulation of wavefront propagation for a cold atoms gravimeter (Pesche, Maxime)A cold atoms gravimeter il a device which measure the gravity with Raman transitions on free falling atoms. Since 2006, the SYRTE research team is working on such a gravimeter, and during my thesis, I will continue their work. Today, this gravimeter is working with an accuracy of 5.7 10^-8. The limits on this result ...
- Sinkevičienė, Mažena Mackoit — Quantum metrology: from solids to cold atomsk I will touch two directions of my research: color centers in solids that I have investigated during my PhD studies and cold atom systems that I am going to investigate during my Postdoc. First, I will present my studies of solid-state systems capable of emitting non-classical states of light. Subsequently I will briefly describe ...
- SISSA-ICTP-TII Ph.D POSITIONSIn the framework of the agreement signed the International School for Advanced Studies(SISSA), the International Centre for Theoretical Physics (Trieste), and Technology Innovation Institute (Abu Dhabi), we announces a selection based on academic qualifications and aninterview for the conferment of three PhD fellowships on Physics andalgorithms for Quantum Technology starting from the academic year 2021/22. + ...
- Smerzi, Augusto — Interferometry 1.0: Theory (Video 1)Download Link
- Smerzi, Augusto — Interferometry 1.0: Theory (Video 2)Download Link
- Sowa, Piotr — Easy setup for observation of two independent lasers interferenceA simple, student lab-level experiment containing interference of two totally independent lasers inside. We used different configurations of lasers, both HeNe and diode ones, to directly obtain interference fringes photos with 27÷87% contrast on typical cameras.
- Stephanie Manz (Speaker at FOMO2021)Stephanie Manz is University Assistant at TU Wien. Her main research interests are quantum metrologyand matter-wave optics with cold atoms and electrons, with a current focus on cold atoms and interferometry with trapped Bose-Einstein condensates. With a small team, she is developing a trapped Cesium interferometer with tunable interactions.
- Tennstedt, Benjamin — High-rate navigation with atom interferometersAtom Interferometers as inertial sensors were getting quite some interest in the last decade. The superior sensitivity of the sensors is mostly reached by large interrogation times of the atoms. For high-rate navigation scenarios, however, the long measurement intervals and preparation times of the atoms lead to severe systematic errors in the navigation solution. In this contribution a quite ...
- The first version of the website is onlineWe are happy to announce that the first version of the website is online.
- The Lecture Notes of Remi Geiger are onlineThe Lecture Notes of Remi Geiger are online
- The Lectures are taking shapeWith only two weeks to go for the first lectures, we have started selecting the first students. There are still a few seats left though!
- The second Lecture Video is available online nowPlease find the lecture notes and the videos in the protected area of the website.
- The video of Remi Geiger’s Talk is onlineYou can find a link on the participants’ page
- The Videos of Lisa Wörner’s and Philippe Bouyer’s presentations are online now.Thank you, Yosri Ben Aicha, for pointing out that the videos had gone missing Lisa Wörner’s Video Philippe Bouyer’s Video
- Tomasz Krehlik — EIT spectroscopy in warm Rb vapour – towards preparation of the coupling beam for cold-atoms experimentsI will present an experimental setup designed for studying electromagnetically induced transparency (EIT) in a ladder scheme of Rb atoms. The highest level of the ladder can be an easily accesible 5D level, as well as the chosen Rydberg state with n about 50. The discrimination of population and coherence effects was performed, showing an ...
- Tzimkas-Dakis, Filippos — Super- and sub-radiance from strongly interacting atomic ensemblesSuper- and subradiance have been an active topic of research since the seminal paper of Dicke on collective emission of atoms confined within a distance that is small compared to the wavelength of the resonantly emitted radiation. The behaviour of the single and multiple-excitation states of interacting atoms can be understood in terms of the ...
- Upasna, Mtech — Crack formation due to volcanic eruption and measurements of gravity anomaly due to magma-filled dikeswe are studying the crack formation due to volcanic eruption and measurements of gravity anomaly due to magma-filled dikes. This is done with the help of quantum gravimeter which is based on atom interferometer. We will also demonstrate the gelatin based model to study the crack propagation . Some other fluids of different densities and ...
- Vinelli, Giuseppe — Measurement of the Gravitational Behaviour of AntimatterThe QUPLAS (QUantum interferometry with Postitrons and LASers) experiment aims to test the gravity theory by measuring the Positronium (Ps) fall in the Earth’s gravitational field. Such measurement would be a test of the Weak Equivalence Principle and the CPT symmetry and is further motivated by the lack of information on antimatter that could improve ...
- Wald, Sebastian — Novel Single-Side-Band Stabilization Method for Laser Frequency ShiftingPrecision laser frequency control is a key requirement for experiments in AMO Physics. At infrared wavelengths, single-sideband modulators offer a frequency tuning of several GHz. Such electro-optic modulators have a dual-parallel Mach-Zehnder interferometer structure. By tuning the phases of the interferometer arms, the carrier and the one sideband can be suppressed. However, drifts in the ...
- We have 135 active participants in the first lecture!This is a truly impressive start to the FOMO 2021 Lectures: We have more than 150 signed up participants and more than 130 have attended the lecture to the very end.
- Weak values in the study of quantum correlations (Zamora, Santiago)(Physics Institute, UNAM) Abstract Weak values have become of interest in recent years due to their several applications and their succesful experimental realization. Among their applications, they are useful in the theoretical detection of quantum correlations. In this talk I will present the general idea of what is a weak value and a quantum entanglement criterion for ...
- Werner, Michael — Phase shifts of atom interferometers in curved PPN-spacetimesI will present a systematic approach to calculate the phase shifts associated to a variety of different interferometer geometries in a curved PPN spacetime. This spacetime geometry is a generalization of Einsteins GR and therefore may give rise to novel quantum tests of relativity. The whole analysis is done in a fashion, which is easy ...
- Wilson, Gwyn — Resonant Transmission in Smooth BarriersResonant transmission is a well-known effect in quantum mechanics, often studied in undergraduate physics courses. There is a resonant behaviour in the transmission probability for a square barrier potential. However, this effect is not seen in a gaussian barrier. The lack of resonances is investigated for barriers that start with a square shape and are ...
- Wolf von Klitzing — Atomtronic Matterwave Guides (Lecture Slides)Wolf von Klitzing is research group leader of the Matterwave Optics and BEC group at IESL–FORTH on Crete in Greece. He is currently also heading the Atom Quantum Technologies COST network (AtomQT.eu). His main interests lie in guided matterwave interferometry and quantum space technologies.
- Wolf von Klitzing — Atomtronic Matterwave Guides (Video)https://cloud.iesl.forth.gr/index.php/s/CA2CZzgeR9SNFHW
- Wolf von Klitzing — Devices: Atomtronic Matterwave Guides (Video)Download Link
- Wolf von Klitzing (Speaker and co-organizer of FOMO2021)Wolf von Klitzing is research group leader of the Matterwave Optics and BEC group at IESL–FORTH on Crete in Greece. He is currently also heading the Atom Quantum Technologies COST network (AtomQT.eu). His main interests lie in guided matterwave interferometry and quantum space technologies.
- Yuelong (武跃龙) — Few-body atomic spectroscopy based on cold 6Li atomsNeutral lithium has a relatively simple three-electronic structure and thus accurate theoretical calculations including quantum electrodynamics (QED), isotope shift, and relativistic corrections can be obtained from many-body wave functions. The development of high precision spectroscopy of lithium offers a benchmark to such theories and can be used to determine the nuclear radius and measure ...
- Žlabys, Giedrius — Engineering time-space crystalline structuresTime-space crystalline structures merge the ideas of time and space crystals to form a system that is periodic both temporally and spatially. The spatial part of the crystalline structure is created by an optical lattice and the temporal periodicity is engineered by choosing a proper resonant periodic driving of the spatial part. In the one-dimensional ...