Invited Talk: Determination of the fine-structure constant using atom interferometry
Léo Morel1, Zhibin Yao1, P. Cladé1 and S. Guellati-Khelifa1,21Laboratoire Kastler Brossel, Sorbonne University, CNRS, ENS-PSL University, College de France, 4 place Jussieu, 75005 Paris, France2Conservatoire National des Arts est Métiers, 292 rue Saint Martin, 75003 Paris, France To test the standard model, we need to know the parameters that scale the fundamental interactions. Among them, the fine structure constant which characterizes the strength of the electromagnetic interaction and thus plays a crucial role in quantum electrodynamics calculations. Using atom interferometry to measure the quotient ħ/mRb of the reduced Planck’s constant and the mass of a rubidium-87 atom, we obtained the most accurate determination of the fine structure constant α=1/137.035999206(11) with…
Saïda Guellati-Khelifa is a full professor at the National Conservatory of Arts and Crafts and researcher at the Kastler Brossel laboratory (LKB) where she leads the “Atomic Interferometry” team. Her research area focuses on high-precision measurements based on atom interferometry to perform highly precise tests of quantum electrodynamics and other fundamental theories. Currently, she is working on the measurement of the structure-fine constant, compact gravimetry, atom interferometry with a frequency comb and the test of the equivalence principle with anti-hydrogen in the framework of the international collaboration GBAR.