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Pré-Publication, Document De Travail Année : 2022

Multi-photon Atom Interferometry via cavity-enhanced Bragg Diffraction

Résumé

Optical cavities are long expected as powerful tools for the realization of large momentum beam splitters for matter waves. In this letter, we realize a multi-photon atom interferometer driven via Bragg diffraction in an optical resonator. The key element of this demonstration is the use of a degenerate cavity to mediate the light-matter interaction which provides a large interrogation mode (1/e^2 diameter of 5.2 mm) and makes the method applicable to a vast class of measurement geometries and atom sources. In view of a future application for gravitational waves detection, we use, as a first demonstration, a standard sub-Doppler cooled atomic source coupled with a 80 cm horizontal resonator and obtain a momentum transfer of up to 2n = 8ħk. Additionally, by varying the tilt of experiment, and thus the projection of gravity, we study the inertial sensitivity of this setup using significantly reduced optical power (<1 mW) due to the optical gain of the cavity. This work opens new perspectives not only for the realization of high sensitivity multi-axis inertial atom sensors, but also for the future realization of hybrid atom/optical gravitational wave detectors.

Dates et versions

hal-03519672 , version 1 (10-01-2022)

Identifiants

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D. O. Sabulsky, Joseph Junca, Xinhao Zou, Andrea Bertoldi, Marco Prevedelli, et al.. Multi-photon Atom Interferometry via cavity-enhanced Bragg Diffraction. 2022. ⟨hal-03519672⟩
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