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arXiv · 2407.11339

Nonreciprocal Single-Photon Band Structure in a Coupled-Spinning-Resonator chain

Jing Li·Ya Yang·Xun Wei Xu·Jing Lu·Hui Jing·Lan Zhou
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Abstract

We analyze the single-photon band structure and the transport of a single photon in a one-dimensional coupled-spinning-resonator chain. The time-reversal symmetry of the resonators chain is broken by the spinning of the resonators, instead of external or synthetic magnetic field. Two nonreciprocal single-photon band gaps can be obtained in the coupled-spinning-resonator chain, whose width depends on the angular velocity of the spinning resonator. Based on the nonreciprocal band gaps, we can implement a single photon circulator at multiple frequency windows, and the direction of photon cycling is opposite for different band gaps. In addition, reciprocal single-photon band structures can also be realized in the coupled-spinning-resonator chain when all resonators rotate in the same direction with equal angular velocity. Our work open a new route to achieve, manipulate, and switch nonreciprocal or reciprocal single-photon band structures, and provides new opportunities to realize novel single-photon devices.

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Jing Li, Ya Yang, Xun Wei Xu, Jing Lu, Hui Jing, Lan Zhou. 2024-07-16. Nonreciprocal Single-Photon Band Structure in a Coupled-Spinning-Resonator chain. https://arxiv.org/abs/2407.11339

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