Nonreciprocal topological phononics in optomechanical arrays

• URL: http://arxiv.org/abs/2002.09164v1
• Date: Fri, 21 Feb 2020 07:34:58 GMT
• Title: Nonreciprocal topological phononics in optomechanical arrays
• Authors: Claudio Sanavio, Vittorio Peano, Andr\'e Xuereb
• Abstract summary: We propose a platform for tunable and nonreciprocal phonon transport based on arrays of optomechanical microtoroids. Time-reversal symmetry is broken by the interplay of photonic spin-orbit coupling, engineered using a state-of-the-art geometrical approach.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose a platform for robust and tunable nonreciprocal phonon transport based on arrays of optomechanical microtoroids. In our approach, time-reversal symmetry is broken by the interplay of photonic spin-orbit coupling, engineered using a state-of-the-art geometrical approach, and the optomechanical interaction. We demonstrate the topologically protected nature of this system by investigating its robustness to imperfections. This type of system could find application in phonon-based information storage and signal processing devices.

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