Multiterminal Nonreciprocal Routing in an Optomechanical Plaquette via Synthetic Magnetism

• URL: http://arxiv.org/abs/2308.15379v2
• Date: Tue, 5 Sep 2023 07:36:58 GMT
• Title: Multiterminal Nonreciprocal Routing in an Optomechanical Plaquette via Synthetic Magnetism
• Authors: Zhi-Xiang Tang and Xun-Wei Xu
• Abstract summary: We propose a nonreciprocal router with one transmitter, one receiver, and two output terminals. The time-reversal symmetry of the system is broken via synthetic magnetism induced by driving the two optical modes with phase-correlated laser fields.
• Score: 0.43512163406552007
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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