Determination of the fine-structure constant with atomic interferometer

Quantum sensors based on light-pulse atomic interferometers enable the precise measurement of a variety of physical quantities. They have a huge potential for testing the fundamental laws of modern physics and for the accurate determination of fundamental constants of physics. Among them is the fine structure constant, whose accurate knowledge of its numerical value is crucial for testing, through low-energy experiments, the calculations of quantum electrodynamics and some predictions of the standard model of particle physics.

First, I will present the latest result that recently led to a new determination of the fine structure constant with a relative uncertainty of $8.1\times10^{-11}$ [1] and discuss the impact of this new result on the Standard Model tests based on the electron magnetic moment anomaly. Then I will present our recent progress with using Bose Einstein Condensate, which can reduce some systematic effects.