Self-localization of polariton condensates in periodic potentials.
Self-localization of polariton condensates in periodic potentials.
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DOI：
10.1103/physrevlett.110.170407
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发表时间：
2013-02
影响因子：
8.6
通讯作者：
E. Ostrovskaya;J. Abdullaev;M. Fraser;A. Desyatnikov;Y. Kivshar
中科院分区：
文献类型：
--
作者：
E. Ostrovskaya;J. Abdullaev;M. Fraser;A. Desyatnikov;Y. Kivshar
在具有周期面内势能的半导体微腔中，我们预言了激子-极化子玻色-爱因斯坦凝聚体的新的空间局域态的存在。我们的理论表明，在连续非共振泵浦的条件下，由于空间周期系统中的极化激子流自感生的有效势，观察到了大范围的光泵浦参数局域化。我们发现，激子-极化子在晶格中的自局域化可能发生在单粒子线性光谱的带隙和带内，并且受增益和耗散的影响，而不是结构势，这与超冷碱性原子的保守凝聚形成了鲜明的对比。
We predict the existence of novel spatially localized states of exciton-polariton Bose-Einstein condensates in semiconductor microcavities with fabricated periodic in-plane potentials. Our theory shows that, under the conditions of continuous nonresonant pumping, localization is observed for a wide range of optical pump parameters due to effective potentials self-induced by the polariton flows in the spatially periodic system. We reveal that the self-localization of exciton-polaritons in the lattice may occur both in the gaps and bands of the single-particle linear spectrum, and is dominated by the effects of gain and dissipation rather than the structured potential, in sharp contrast to the conservative condensates of ultracold alkali atoms.