Vortices in Polariton OPO Superfluids
Vortices in Polariton OPO Superfluids
复制标题
Polariton OPO 超流体中的涡流
DOI:
10.1007/978-3-642-24186-4_6
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
M. Szymańska
中科院分区:
文献类型:
--
作者:
F. Marchetti;M. Szymańska
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 characterising an OPO play a crucial role in the occurrence and dynamics of both metastable and spontaneous vortices.
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