Effects of spin-orbit coupling on Jaynes-Cummings and Tavis-Cummings models
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We consider ultracold atoms inside a ring optical cavity that supports a single plane-wave mode. The cavity field, together with an external coherent laser field, drives a two-photon Raman transition between two internal pseudospin states of the atom. This gives rise to an effective coupling between atom's pseudospin and external center-of-mass (COM) motion. For the case of a single atom inside the cavity, We show how the spin-orbit coupling modifies the static and dynamic properties of the Jaynes-Cummings (JC) model. In the case of many atoms in thermodynamic limit, we show that the spin-orbit coupling modifies the Dicke superradiance phase transition boundary and the non-superradiant normal phase may become reentrant in some regimes.
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Zhu, Chuanzhou, Dong, Lin and Pu, Han. "Effects of spin-orbit coupling on Jaynes-Cummings and Tavis-Cummings models." Physical Review A, 94, no. 5 (2016) American Physical Society: https://doi.org/10.1103/PhysRevA.94.053621.