SABULSKY, D. O.; JUNCA, Joseph; ZOU, Xinhao; BERTOLDI, Andrea; PREVEDELLI, Marco; BOUYER, Philippe; CANUEL, Benjamin

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SABULSKY, D. O.
Laboratoire Photonique, Numérique et Nanosciences [LP2N]

JUNCA, Joseph
Laboratoire Photonique, Numérique et Nanosciences [LP2N]

ZOU, Xinhao
Laboratoire Photonique, Numérique et Nanosciences [LP2N]

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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.< Réduire

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Cold Atoms

Atom interferometry

Atom sensors

GW detectors

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Multi-photon Atom Interferometry via cavity-enhanced Bragg Diffraction

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Résumé en anglais

Mots clés en anglais

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