Momentum-exchange interactions in a Bragg atom interferometer suppress Doppler dephasing

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Abstract

Large ensembles of laser-cooled atoms interacting through infinite-range photon-mediated interactions are powerful platforms for quantum simulation and sensing. Here we realize momentum-exchange interactions in which pairs of atoms exchange their momentum states by collective emission and absorption of photons from a common cavity mode, a process equivalent to a spin-exchange or XX collective Heisenberg interaction. The momentum-exchange interaction leads to an observed all-to-all Ising-like interaction in a matter-wave interferometer.

Year of Publication
2024
Date Published
2024-05
Journal Title
Science
Volume
384
Issue
6695
Start Page or Article ID
551-556
ISSN Number
0036-8075, 1095-9203
DOI
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