@article{13218,
  author = {Chengyi Luo and Haoqing Zhang and Vanessa Koh and John Wilson and Anjun Chu and Murray Holland and Ana Maria Rey and James Thompson},
  title = {Cavity-Mediated Collective Momentum-Exchange Interactions},
  abstract = {<p>Quantum simulation and sensing hold great promise for providing new insights into nature, from understanding complex interacting systems to searching for undiscovered physics. Large ensembles of laser-cooled atoms interacting via infinite-range photon mediated interactions are a powerful platform for both endeavours. Here, we realize for the first time momentum-exchange interactions in which atoms exchange their momentum states via collective emission and absorption of photons from a common cavity mode. The momentum-exchange interaction leads to an observed all-to-all Ising-like interaction in a matter-wave interferometer, which is useful for entanglement generation. A many-body energy gap also emerges, effectively binding interferometer matter-wave packets together to suppress Doppler dephasing, akin to Mössbauer spectroscopy. The tunable momentum-exchange interaction provides a new capability for quantum interaction-enhanced matter-wave interferometry and for realizing exotic behaviors including simulations of superconductors and dynamical gauge fields.</p>
},
  year = {2023},
  journal = {Submitted},
  url = {https://arxiv.org/abs/2304.01411},
  note = {Submitted: 2023-04-03},
}