Regular-Orbit-Engineered Chaotic Photon Transport in Mixed Phase Space

The dynamical evolution of light in asymmetric microcavities is of primary interest for broadband optical coupling and enhanced light-matter interaction. Here, we propose and demonstrate that the chaos-assisted photon transport can be engineered by regular periodic orbits in the momentum-position ph...

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Bibliographic Details
Published in:Physical review letters 2019-10, Vol.123 (17), p.1-173903, Article 173903
Main Authors: Chen, Li-Kun, Gu, Yu-Zhong, Cao, Qi-Tao, Gong, Qihuang, Wiersig, Jan, Xiao, Yun-Feng
Format: Article
Language:English
Subjects:
Asymmetry
Broadband
Channels
Evolution
Excitation
Microcavities
Nanofibers
Optical coupling
Orbits
Photonics
Photons
Transport
Whispering gallery modes
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Summary:The dynamical evolution of light in asymmetric microcavities is of primary interest for broadband optical coupling and enhanced light-matter interaction. Here, we propose and demonstrate that the chaos-assisted photon transport can be engineered by regular periodic orbits in the momentum-position phase space of an asymmetric microcavity. Remarkably, light at different initial states experiences different evolution pathways, following either regular-chaotic channels or pure chaotic channels. Experimentally, we develop a nanofiber technique to accurately control the excitation position of light in the phase space. We find that the coupling to high-Q whispering gallery modes depends strongly on excitation in islands or chaotic sea, showing a good agreement with the theoretical prediction. The engineered chaotic photon transport has potential in light manipulation, broadband photonic devices, and phase-space reconstruction.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.123.173903