Two-component polariton condensate in an optical microcavity
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We present a scheme for engineering the extended two-component Bose-Hubbard model using polariton condensate supported by an optical microcavity. Compared to the usual two-component Bose-Hubbard model with only Kerr nonlinearity, our model includes a nonlinear tunneling term which depends on the number difference of the particle in the two modes. In the mean-field treatment, this model is an analog to a nonrigid pendulum with a variable pendulum length whose sign can be also changed. We study the dynamic and groundstate properties of this model and show that there exists a first-order phase transition as the strength of the nonlinear tunneling rate is varied. Furthermore, we propose a scheme to obtain the polariton condensate wave function.
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Zhang, Yong-Chang, Zhou, Xiang-Fa, Guo, Guang-Can, et al.. "Two-component polariton condensate in an optical microcavity." Physical Review A, 89, (2014) American Physical Society: 53624. http://dx.doi.org/10.1103/PhysRevA.89.053624.