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Recent advances in cavity optomechanics: from chaos and phonon lasing to mechanically-induced synchronization (Conference Presentation)
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Paper Abstract

The realization of high-Q optomechanical cavities in silicon photonic crystals enables the coupling of near-infrared photons and GHz-frequency phonons in ultra-small volumes. Such coupling enables myriads of novel phenomena (resolved sideband cooling, optomechanically induced transparency, or phonon lasing) both in the linear and nonlinear regimes. Here, we report recent advances in silicon photonic crystal optomechanical cavities beyond the linear regimes. First, we show that by combining thermal effects, free-carrier-induced refraction and optomechanical coupling is it possible to attain different states in the cavity, ranging from chaos [1] to phonon lasing [2], being easy to switch from one state to another by using an external optical source [3]. We also show that using think mechanical links between adjacent optomechanical cavities enables to synchronize their mechanical motion via weak mechanical coupling [4]. These results can be easily upscaled to more than two cavities and are thus the first step towards realizing integrated networks of synchronized OM oscillators, which promise an enhancement of the performance of single nano-mechanical oscillator systems and enable a novel architecture for neuromorphic computing applications References [1] D. Navarro-Urrios et al.,” Nature Commun. 8, 14965 (2017). [2] D. Navarro-Urrios et al, “A self-stabilized coherent phonon source driven by optical forces,” Sci. Rep. 5, 15733 (2015). [3] J. Maire et al., “Optical modulation of coherent phonon emission in optomechanical cavities,” Arxiv pre-print on https://arxiv.org/abs/1802.01146 [4] M. F. Colombano et al., “Synchronization of optomechanical cavities by mechanical interaction,” submitted.

Paper Details

Date Published: 8 March 2019
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Proc. SPIE 10927, Photonic and Phononic Properties of Engineered Nanostructures IX, 109271O (8 March 2019); doi: 10.1117/12.2516245
Show Author Affiliations
Alejandro Martínez, Univ. Politècnica de València (Spain)
Clivia M. Sotomayor-Torres, Institut Català de Nanociència i Nanotecnologia (ICN2) (Spain)
Daniel Navarro-Urrios, Univ. de Barcelona (Spain)


Published in SPIE Proceedings Vol. 10927:
Photonic and Phononic Properties of Engineered Nanostructures IX
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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