Spontaneous spin bifurcations in a Bose-Einstein condensate of indirect excitons

作者: T. Liu , T.C.H. Liew

DOI: 10.1016/J.SPMI.2016.11.044

关键词: Condensed matter physicsExcitonPhysicsSpin-½BifurcationSpin polarizationAmplitudeDissipationBose–Einstein condensateLinear polarization

摘要: Abstract In this paper, we theoretically study the spin dynamics of a spatially trapped Bose-Einstein condensate indirect excitons (IXs). A spontaneous parity-symmetry breaking bifurcation for bright is reported under non-resonant linearly polarized pumping. Above certain pumping amplitude, condensation spontaneously and stochastically adopts one two spin-polarized configurations Sz depending on initial occupations. This phenomenon bifurcations attributed to small energy splitting difference in dissipation rates between dark IX systems. The considered systems thus have potential applications memories, switches simulate interactions condensed lattices.

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