https://doi.org/10.1140/epjp/s13360-025-06189-0
Regular Article
Nonreciprocity in a rotational cavity system
1
Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi’an Jiaotong University, 710049, Xi’an, China
2
School of Science, Xi’an Polytechnic University, 710048, Xi’an, China
a
yunlong.wang@mail.xjtu.edu.cn
b
feiran0325@xjtu.edu.cn
Received:
18
January
2025
Accepted:
3
March
2025
Published online:
17
March
2025
We investigate a system of two coupled optical cavities driven by control and probe fields, where photon tunneling and a common rotational mirror influence the photon dynamics. The investigation explores the effects of control field power, photon tunneling strength, and the phase difference between the control fields on the probe field responses in each cavity. When the control fields in both cavities are coherent, with a phase difference and a nonzero photon tunneling strength, the system exhibits nonreciprocal behavior. Specifically, the probe field in cavity 
shows a transparency window, while the probe field in cavity 
exhibits absorption, with the opposite behavior observed by changing the phase difference. This asymmetry arises from the interaction between photon tunneling and phase difference, which induces asymmetric coupling between the cavities. Our findings highlight the critical role of photon tunneling and phase difference in generating nonreciprocal behavior in coupled cavity systems and provide insights into their potential application in nonreciprocal optical devices.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
