{"id":2388,"date":"2022-06-10T09:30:33","date_gmt":"2022-06-10T09:30:33","guid":{"rendered":"https:\/\/www.matterwaveoptics.eu\/?p=2388"},"modified":"2022-10-07T08:20:26","modified_gmt":"2022-10-07T08:20:26","slug":"invited-talk-matter-waves-lensing-in-dynamic-wave-guides","status":"publish","type":"post","link":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/person\/wolf-von-klitzing\/invited-talk-matter-waves-lensing-in-dynamic-wave-guides\/","title":{"rendered":"Invited Talk: Matter-Waves lensing in Dynamic Wave-Guides"},"content":{"rendered":"\n

Giannis Drougakis1<\/sup>,Saurabh Pandey1,2,4<\/sup>, Hector Mas1,3,5<\/sup>, Vishnupriya Puthiya Veettil1<\/sup>,  Georgios Vasilakis1<\/sup>, and Wolf von Klitzing1,\u2020<\/sup> 
<\/em><\/strong><\/p>\n\n\n\n

    \n
  1. Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, Heraklion 70013, Greece<\/em><\/em><\/li>\n\n\n\n
  2. Department of Materials Science and Technology, University of Crete, Heraklion 70013, Greece<\/em><\/em><\/li>\n\n\n\n
  3. Department of Physics, University of Crete, Heraklion 70013, Greece <\/em><\/em><\/li>\n\n\n\n
  4. Physics Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA<\/em><\/li>\n\n\n\n
  5. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA <\/em><\/li>\n<\/ol>\n\n\n\n

    Mattewaves are promising candidates for the realization of extremely sensitive sensors. Some of the most sensitive and precise measurements to date of gravity[1],  inertia[2],  and rotation[3]  are based on matter-wave interferometry with free-falling atomic clouds. A critical requirement to achieve very high sensitivities is the long interrogation time, which consequently leads to experimental apparatus up to a hundred meters tall or the requirement for experiments to be performed in microgravity in space[4\u20147].  To tackle this problem, the gravitational acceleration must be cancelled, e.g. by manipulating atomic waves in time-changeable traps and waveguides [8].<\/p>\n\n\n\n

    We have recently demonstrated smooth and controllable matter-wave guides by transporting Bose-Einstein condensates (BECs) over macroscopic distances\u00a0without any heating or decohering their internal quantum states [9]. A neutral-atom accelerator ring was utilized to bring BECs to very high speeds (up to 16 times their sound velocity) and transport them in a magnetic matter-wave guide for 15 centimetres whilst fully preserving their internal coherence. We then use a magnetogravitational matter-wave lens to collimate and focus matterwaves in ring-shaped time-averaged adiabatic potentials. This \u201cDelta-kick cooling\u201d sequence of Bose-Einstein condensates reduces their expansion energies by a factor of 46 down to 800 pK. Compared to the state-of-the-art experiments, requiring zero gravity or large free-flight distances, the ring-shaped atomtronic circuit has a diameter of less than one millimetre and exhibits a high level of control, providing an important step toward atomtronic quantum sensors and the investigation of very low energy effects in ultra-cold atoms.<\/p>\n\n\n\n

    In this presentation, I will demonstrate a new fundamental limit for the coherent propagation in an imperfect matterwave guide.<\/p>\n\n\n

    \n
    \"\"
    Figure: The focus of a BEC in a matter wave guide based  on Time-Averaged Adiabatic Potentials<\/figcaption><\/figure>\n<\/div>\n\n\n

    <\/p>\n\n\n\n

    References<\/strong><\/p>\n\n\n\n

    1. Rosi, G., Sorrentino, F., Cacciapuoti, L., Prevedelli, M. & Tino, G. M. Precision measurement of the Newtonian gravitational constant using cold atoms. Nature <\/em>510<\/strong>, 518\u2013521 (2014).<\/p>\n\n\n\n

    2. Geiger, R. et al. Detecting inertial effects with airborne matter-wave interferometry. Nat<\/em>. Commun. <\/em>2<\/strong>, 474 (2011). <\/p>\n\n\n\n

    3. Dutta, I. et al. Continuous cold-atom inertial sensor with 1 nrad\/sec rotation stability. Phys. Rev. Lett<\/em>. 116<\/strong>, 183003 (2016). <\/p>\n\n\n\n

    4. Kovachy, T. et al. Quantum superposition at the half-metre scale. Nature <\/em>528<\/strong>, 530\u2013533 (2015). <\/p>\n\n\n\n

    5. van Zoest, T. et al. Bose\u2013Einstein condensation in microgravity. Science <\/em>328<\/strong>, 1540\u20131543 (2010). <\/p>\n\n\n\n

    6. Barrett, B. et al. Dual matter-wave inertial sensors in weightlessness. Nat. Commun<\/em>. 7<\/strong>, 13786 (2016).<\/p>\n\n\n\n

    7. Soriano, M. et al. Cold atom laboratory mission system design. In 2014 IEEE Aerospace Conference <\/em>1\u201311 (IEEE, 2014). <\/p>\n\n\n\n

    8. Wang, Y. J. et al. Atom Michelson interferometer on a chip using a Bose\u2013Einstein condensate. Phys. Rev. Lett<\/em>. 94<\/strong>, 090405 (2005). <\/p>\n\n\n\n

    9. Saurabh Pandey, Hector Mas, Giannis Drougakis, Premjith Thekkeppatt, Vasiliki Bolpasi, Georgios Vasilakis, Konstantinos Poulios, and Wolf von Klitzing Hypersonic Bose–Einstein condensates in accelerator rings Nature <\/a> 570:7760 205–209 (2019)<\/p>\n\n\n\n

    10. Saurabh Pandey et al. Atomtronic Matter-Wave Lensing <\/em> Phys. Rev. Let. <\/a>  126 17 <\/strong> (2021)  <\/p>\n\n\n\n

    \u2020 Email: wvk@iesl.forth.gr<\/p>\n","protected":false},"excerpt":{"rendered":"

    We have recently demonstrated smooth and controllable matter-wave guides by transporting Bose-Einstein condensates (BECs) over macroscopic distances\u00a0without any heating or decohering their internal quantum states [9]. A neutral-atom accelerator ring was utilized to bring BECs to very high speeds (up to 16 times their sound velocity) and transport them in a magnetic matter-wave guide for 15 centimetres whilst fully preserving their internal coherence. We then use a magnetogravitational matter-wave lens to collimate and focus matterwaves in ring-shaped time-averaged adiabatic potentials. This \u201cDelta-kick cooling\u201d sequence of Bose-Einstein condensates reduces their expansion energies by a factor of 46 down to 800 pK. Compared to the state-of-the-art experiments, requiring zero gravity or large free-flight distances, the ring-shaped atomtronic circuit has a diameter of less than one millimetre and exhibits a high level of control, providing an important step toward atomtronic quantum sensors and the investigation of very low energy effects in ultra-cold atoms.<\/p>\n

    In this presentation, I will demonstrate a new fundamental limit for the coherent propagation in an imperfect matterwave guide.<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","_uag_custom_page_level_css":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[84,26],"tags":[],"class_list":["post-2388","post","type-post","status-publish","format-standard","hentry","category-fomo2022-invited-talk","category-wolf-von-klitzing"],"jetpack_featured_media_url":"","uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"ashe-slider-full-thumbnail":false,"ashe-full-thumbnail":false,"ashe-list-thumbnail":false,"ashe-grid-thumbnail":false,"ashe-single-navigation":false},"uagb_author_info":{"display_name":"Atena Zalbeik-Dormayer","author_link":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/author\/zalbeik-dormayer\/"},"uagb_comment_info":0,"uagb_excerpt":"We have recently demonstrated smooth and controllable matter-wave guides by transporting Bose-Einstein condensates (BECs) over macroscopic distances\u00a0without any heating or decohering their internal quantum states [9]. A neutral-atom accelerator ring was utilized to bring BECs to very high speeds (up to 16 times their sound velocity) and transport them in a magnetic matter-wave guide for…","jetpack_sharing_enabled":true,"publishpress_future_action":{"enabled":false,"date":"2026-08-02 05:39:09","action":"category","newStatus":"draft","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/posts\/2388","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/comments?post=2388"}],"version-history":[{"count":8,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/posts\/2388\/revisions"}],"predecessor-version":[{"id":2734,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/posts\/2388\/revisions\/2734"}],"wp:attachment":[{"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/media?parent=2388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/categories?post=2388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/tags?post=2388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}