Nonreciprocal Transmission and Nonreciprocal Entanglement in a Spinning Microwave Magnomechanical System |
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Authors: | Zhi-Bo Yang Jin-Song Liu Ai-Dong Zhu Hong-Yu Liu Rong-Can Yang |
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Institution: | 1. Department of Physics, College of Science, Yanbian University, Yanji, Jilin, 133002 China;2. Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, and College of Physics and Energy, Fujian Normal University, Fuzhou, 350117 China |
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Abstract: | This study presents nonreciprocal transmission and nonreciprocal magnon–phonon entanglement in a spinning microwave magnomechanical system. This system consists of microwave photons, magnon modes, and phonons. These are created by the vibrational mode of a yttrium iron garnet sphere. This investigation reveals that nonreciprocity is caused by the light that is circulating in a resonator that is experiencing a Fizeau shift. This leads to a difference in the effective detuning frequency of the photon for forwarding and backward drives. A super-strong transmission isolation rate (>100 dB) and a strong entanglement isolation rate (≈50 dB) are obtained by applying the experimental parameters. This scheme opens a new route for exploiting a variety of nonreciprocal effects, and it provides the theoretical basis for the design and realization of magnetically controllable isolators and diodes. |
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Keywords: | Fizeau shift magnon–phonon entanglement nonreciprocal systems spinning microwave magnomechanical systems |
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