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arXiv · 1709.06236

Reconfigurable optomechanical circulator and directional amplifier

Zhen Shen·Yan-Lei Zhang·Yuan Chen·Fang-Wen Sun·Xu-Bo Zou·Guang-Can Guo·Chang-Ling Zou·Chun-Hua Dong
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Abstract

Non-reciprocal devices, which allow the non-reciprocal signal routing, serve as the fundamental elements in photonic and microwave circuits and are crucial in both classical and quantum information processing. The radiation-pressure-induced coupling between light and mechanical motion in traveling wave resonators has been exploited to break the Lorentz reciprocity, realizing non-reciprocal devices without magnetic materials. Here, we experimentally demonstrate a reconfigurable nonreciprocal device with alternative functions of either a circulator or a directional amplifier via the optomechanically induced coherent photon-phonon conversion or gain. The demonstrated device exhibits considerable flexibility and offers exciting opportunities for combining reconfigurability, non-reciprocity and active properties in single photonic structures, which can also be generalized to microwave as well as acoustic circuits.

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Zhen Shen, Yan-Lei Zhang, Yuan Chen, Fang-Wen Sun, Xu-Bo Zou, Guang-Can Guo, Chang-Ling Zou, Chun-Hua Dong. 2017-09-19. Reconfigurable optomechanical circulator and directional amplifier. https://doi.org/10.1038/s41467-018-04187-8

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