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arXiv 1704.04446cond-mat.mes-hallcond-mat.quant-gas
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驱动耗散极化激元凝聚中的局域化和自陷

Localization and self-trapping in driven-dissipative polariton condensates

F. Bello, P. R. Eastham

摘要:

本文研究了双模约瑟夫森系统(如双势阱)中的非对称抽运驱动耗散玻色-爱因斯坦凝聚体。我们研究了非线性效应对凝聚态粒子数和模式跃迁的影响。对广义Gross-Pitaevskii方程进行了修正,使之能处理单模泵浦。我们在这样一个系统中的稳态解的特点以及潜在的捕获的冷凝模式的标准。存在许多可能的稳态,具有不同的密度和/或相位分布。通过改变结的参数或初始条件,或施加外场,可以诱导不同凝聚模式之间的转变。

英文摘要:

We study driven-dissipative Bose-Einstein condensates in a two-mode Josephson system, such as a double-well potential, with asymmetrical pumping. We investigate nonlinear effects on the condensate populations and mode transitions. The generalized Gross-Pitaevskii equations are modified in order to treat pumping of only a single mode. We characterize the steady-state solutions in such a system as well as criteria for potential trapping of a condensate mode. There are many possible steady-states, with different density and/or phase profiles. Transitions between different condensate modes can be induced by varying the parameters of the junction or the initial conditions, or by applying external fields.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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