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arXiv 1107.4487cond-mat.mes-hall
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极化激元OPO超流体中的涡旋

Vortices in polariton OPO superfluids

F. M. Marchetti, M. H. Szymanska

摘要:

这一章回顾了量子化涡旋在极化激元流体中的发生,主要是当极化激元被驱动在光学参量振荡器(OPO)制度。我们首先审查的OPO物理,连同其分析和数值模拟,后者是必要的有限尺寸系统的描述。斑图形成在偏离平衡的系统中是典型的。同样,我们发现,统一的OPO解决方案可以是不稳定的量子化涡旋的自发形成。然而,亚稳涡只能从外部注入到一个稳定的对称状态,它们的持续性是由于OPO超流性质。我们讨论了如何电流特性的OPO亚稳和自发涡的发生和动力学中发挥了至关重要的作用。

英文摘要:

This chapter reviews the occurrence of quantised vortices in polariton fluids, primarily when polaritons are driven in the optical parametric oscillator (OPO) regime. We first review the OPO physics, together with both its analytical and numerical modelling, the latter being necessary for the description of finite size systems. Pattern formation is typical in systems driven away from equilibrium. Similarly, we find that uniform OPO solutions can be unstable to the spontaneous formation of quantised vortices. However, metastable vortices can only be injected externally into an otherwise stable symmetric state, and their persistence is due to the OPO superfluid properties. We discuss how the currents charactering an OPO play a crucial role in the occurrence and dynamics of both metastable and spontaneous vortices.

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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