Abstract
Recently, there are several experiments demonstrating the possibility to tune the interaction constants using biexcitonic Feshbach resonance in resonantly created polariton condensate and single quantum well. Motivated by these experiments, we theoretically study the stationary state of a polariton condensate whose interatomic scattering length is periodically modulated with optical Feshbach resonance, which represents a novel kind of non-equilibrium superfluidity. In more detail, the spontaneous symmetry breaking of the spin degree of freedom induced by different loss rates of the linear polarizations are investigated based on driven-dissipative Gross–Pitaevskii equations coupled to the rate equation of a reservoir.
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