Simulation of XXZ Spin Models using Sideband Transitions in Trapped Bosonic Gases

Anjun Chu, Johannes Will, Jan Arlt, Carsten Klempt, Ana Maria Rey

备注：: 6+10 pages, 4+6 figures
发表信息：: Phys. Rev. Lett. 125, 240504 (2020)
DOI：: 10.1103/PhysRevLett.125.240504

英文摘要：

We theoretically propose and experimentally demonstrate the use of motional sidebands in a trapped ensemble of $^{87}$Rb atoms to engineer tunable long-range XXZ spin models. We benchmark our simulator by probing a ferromagnetic to paramagnetic dynamical phase transition in the Lipkin-Meshkov-Glick (LMG) model, a collective XXZ model plus additional transverse and longitudinal fields, via Rabi spectroscopy. We experimentally reconstruct the boundary between the dynamical phases, which is in good agreement with mean-field theoretical predictions. Our work introduces new possibilities in quantum simulation of anisotropic spin-spin interactions and quantum metrology enhanced by many-body entanglement.

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