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arXiv · 2308.15379

Multiterminal Nonreciprocal Routing in an Optomechanical Plaquette via Synthetic Magnetism

Zhi-Xiang Tang·Xun-Wei Xu
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Abstract

Optomechanical systems with parametric coupling between optical (photon) and mechanical (phonon) modes provide a useful platform to realize various magnetic-free nonreciprocal devices, such as isolators, circulators, and directional amplifiers. However, nonreciprocal router with multiaccess channels has not been extensively studied yet. Here, we propose a nonreciprocal router with one transmitter, one receiver, and two output terminals, based on an optomechanical plaquette composing of two optical modes and two mechanical modes. The time-reversal symmetry of the system is broken via synthetic magnetism induced by driving the two optical modes with phase-correlated laser fields. The prerequisites for nonreciprocal routing are obtained both analytically and numerically, and the robustness of the nonreciprocity is demonstrated numerically. Multi-terminal nonreciprocal router in optomechanical plaquette provides a useful quantum node for development of quantum network information security and realization of quantum secure communication.

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Zhi-Xiang Tang, Xun-Wei Xu. 2023-08-29. Multiterminal Nonreciprocal Routing in an Optomechanical Plaquette via Synthetic Magnetism. https://doi.org/10.1088/1367-2630%2Fad121d

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