PT-Symmetry-Breaking Chaos in Optomechanics

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...

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Bibliographic Details
Published inPhysical review letters Vol. 114; no. 25; p. 253601
Main Authors Lü, Xin-You, Jing, Hui, Ma, Jin-Yong, Wu, Ying
Format Journal Article
LanguageEnglish
Published United States 26.06.2015
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Summary: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.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.114.253601