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Title: Mesoscopic chaos mediated by Drude electron-hole plasma in silicon optomechanical oscillators
Authors: Wu, J
Huang, S.-W
Huang, Y
Zhou, H
Yang, J
Liu, J.-M
Yu, M
Lo, G
Kwong, D.-L 
Duan, S
Wei Wong, C
Issue Date: 2017
Publisher: NLM (Medline)
Citation: Wu, J, Huang, S.-W, Huang, Y, Zhou, H, Yang, J, Liu, J.-M, Yu, M, Lo, G, Kwong, D.-L, Duan, S, Wei Wong, C (2017). Mesoscopic chaos mediated by Drude electron-hole plasma in silicon optomechanical oscillators. Nature communications 8 : 15570. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: Chaos has revolutionized the field of nonlinear science and stimulated foundational studies from neural networks, extreme event statistics, to physics of electron transport. Recent studies in cavity optomechanics provide a new platform to uncover quintessential architectures of chaos generation and the underlying physics. Here, we report the generation of dynamical chaos in silicon-based monolithic optomechanical oscillators, enabled by the strong and coupled nonlinearities of two-photon absorption induced Drude electron-hole plasma. Deterministic chaotic oscillation is achieved, and statistical and entropic characterization quantifies the chaos complexity at 60?fJ intracavity energies. The correlation dimension D2 is determined at 1.67 for the chaotic attractor, along with a maximal Lyapunov exponent rate of about 2.94 times the fundamental optomechanical oscillation for fast adjacent trajectory divergence. Nonlinear dynamical maps demonstrate the subharmonics, bifurcations and stable regimes, along with distinct transitional routes into chaos. This provides a CMOS-compatible and scalable architecture for understanding complex dynamics on the mesoscopic scale.
Source Title: Nature communications
ISSN: 2041-1723
DOI: 10.1038/ncomms15570
Rights: Attribution 4.0 International
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