Zhang, Yong-ChangZhou, Xiang-FaZhou, XingxiangGuo, Guang-CanPu, HanZhou, Zheng-Wei2015-07-092015-07-092015Zhang, Yong-Chang, Zhou, Xiang-Fa, Zhou, Xingxiang, et al.. "Two-component Bose-Hubbard model in an array of cavity polaritons." <i>Physical Review A,</i> 91, (2015) American Physical Society: 43633. http://dx.doi.org/10.1103/PhysRevA.91.043633.https://hdl.handle.net/1911/80872We propose a scheme which can realize an extended two-component Bose-Hubbard model using polaritons confined in an array of optical cavities. In addition to the density-dependent interactions, this model also contains nonlinear coupling terms between the two components of the polariton. Using a mean-field calculation, we obtain the phase diagram which shows how these terms affect the transition between the Mott insulator and the superfluid phase. In addition, we employ both a perturbation approach and an exact diagonalization method to gain more insights into the phase diagram.engArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.Journal articlehttp://dx.doi.org/10.1103/PhysRevA.91.043633