TY - JOUR
AU - Chengyi Luo
AU - Haoqing Zhang
AU - Chitose Maruko
AU - Eliot Bohr
AU - Anjun Chu
AU - Ana Rey
AU - James Thompson
AB - Spin Hamiltonians in condensed matter and quantum sensing typically utilize pairwise or two-body interactions between constituents in the material or ensemble. However, there is growing interest in exploring more general n-body interactions for n \textgreater 2. In this study, we realized an effective n = 3-body Hamiltonian interaction using an ensemble of laser-cooled atoms in a high-finesse optical cavity with the pseudospin 1/2 encoded by two atomic momentum states. We applied two dressing tones that induce the atoms to exchange photons via the cavity to realize a virtual six-photon process; lower-order interactions destructively interfered. We also observed signatures of a n = 4-body interaction mediated by a virtual eight-photon process. Our approach may be extensible to three-body interactions in multilevel systems or to even higher-order interactions.
BT - Science
DA - nov
DO - 10.1126/science.adv0990
M1 - 6776
N1 - Publisher: American Association for the Advancement of Science
N2 - Spin Hamiltonians in condensed matter and quantum sensing typically utilize pairwise or two-body interactions between constituents in the material or ensemble. However, there is growing interest in exploring more general n-body interactions for n \textgreater 2. In this study, we realized an effective n = 3-body Hamiltonian interaction using an ensemble of laser-cooled atoms in a high-finesse optical cavity with the pseudospin 1/2 encoded by two atomic momentum states. We applied two dressing tones that induce the atoms to exchange photons via the cavity to realize a virtual six-photon process; lower-order interactions destructively interfered. We also observed signatures of a n = 4-body interaction mediated by a virtual eight-photon process. Our approach may be extensible to three-body interactions in multilevel systems or to even higher-order interactions.
PY - 2025
SP - 925
EP - 929
T2 - Science
TI - Realization of three- and four-body interactions between momentum states in a cavity
UR - https://www.science.org/doi/10.1126/science.adv0990
VL - 390
ER -