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 () and Chun-Hua Dong ()
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Zhen Shen: University of Science and Technology of China
Yan-Lei Zhang: University of Science and Technology of China
Yuan Chen: University of Science and Technology of China
Fang-Wen Sun: University of Science and Technology of China
Xu-Bo Zou: University of Science and Technology of China
Guang-Can Guo: University of Science and Technology of China
Chang-Ling Zou: University of Science and Technology of China
Chun-Hua Dong: University of Science and Technology of China

Nature Communications, 2018, vol. 9, issue 1, 1-6

Abstract: Abstract Non-reciprocal devices, which allow non-reciprocal signal routing, serve as 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 travelling-wave resonators has been exploited to break the Lorentz reciprocity, enabling non-reciprocal devices without magnetic materials. Here, we experimentally demonstrate a reconfigurable non-reciprocal device with alternative functions as either a circulator or a directional amplifier via 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 devices, which can also be generalized to microwave and acoustic circuits.

Date: 2018
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DOI: 10.1038/s41467-018-04187-8

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