PT-Symmetry-Breaking Chaos in Optomechanics
PT-Symmetry-Breaking Chaos in Optomechanics
复制标题
PT-对称性-打破光力学的混沌
DOI：
10.1103/physrevlett.114.253601
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发表时间：
2015-06-26
影响因子：
8.6
通讯作者：
Wu, Ying
中科院分区：
文献类型：
--
作者：
Lu, Xin-You;Jing, Hui;Wu, Ying
我们在一个具有超低驱动阈值的光机系统中证明了PT对称破缺混沌。原则上，一旦驱动激光被施加到腔模并持续一段时间，这种混沌就会出现。驱动力的大小与混沌开始的时间成反比。这最初来自于PT对称性破缺阶段的场局域化对非线性的动态增强。此外，这种混沌是可切换的，通过调整系统参数，使PT对称相变发生。这项工作可能从根本上拓宽腔光学力学和非线性光学的领域。这为研究超低功率激光引发混沌及其在保密通信中的潜在应用提供了前景。
We demonstrate PT-symmetry-breaking chaos in an optomechanical system, which features an ultralow driving threshold. In principle, this chaos will emerge once a driving laser is applied to the cavity mode and lasts for a period of time. The driving strength is inversely proportional to the starting time of chaos. This originally comes from the dynamical enhancement of nonlinearity by field localization in the PT-symmetry-breaking phase. Moreover, this chaos is switchable by tuning the system parameters so that a PT-symmetry phase transition occurs. This work may fundamentally broaden the regimes of cavity optomechanics and nonlinear optics. It offers the prospect of exploring ultralow-power-laser-triggered chaos and its potential applications in secret communication.