TY - JOUR
AU - Chengyi Luo
AU - Haoqing Zhang
AU - Vanessa Koh
AU - John Wilson
AU - Anjun Chu
AU - Murray Holland
AU - Ana Maria Rey
AU - James Thompson
AB - <jats:p>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. A many-body energy gap also emerges, effectively binding interferometer matter-wave packets together to suppress Doppler dephasing in analogy to Mössbauer spectroscopy. The tunable momentum-exchange interaction expands the capabilities of quantum interaction–enhanced matter-wave interferometry and may enable the realization of exotic behaviors, including simulations of superconductors and dynamical gauge fields.</jats:p>
BT - Science
DA - 2024-05
DO - 10.1126/science.adi1393
IS - 6695
N2 - <jats:p>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. A many-body energy gap also emerges, effectively binding interferometer matter-wave packets together to suppress Doppler dephasing in analogy to Mössbauer spectroscopy. The tunable momentum-exchange interaction expands the capabilities of quantum interaction–enhanced matter-wave interferometry and may enable the realization of exotic behaviors, including simulations of superconductors and dynamical gauge fields.</jats:p>
PB - American Association for the Advancement of Science (AAAS)
PY - 2024
SP - 551
EP - 556
T2 - Science
TI - Momentum-exchange interactions in a Bragg atom interferometer suppress Doppler dephasing
VL - 384
SN - 0036-8075, 1095-9203
ER -