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Nonreciprocal Transmission and Nonreciprocal Entanglement in a Spinning Microwave Magnomechanical System
Author(s) -
Yang ZhiBo,
Liu JinSong,
Zhu AiDong,
Liu HongYu,
Yang RongCan
Publication year - 2020
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.202000196
Subject(s) - yttrium iron garnet , quantum entanglement , microwave , physics , optical isolator , resonator , realization (probability) , photon , magnon , spinning , transmission (telecommunications) , phonon , condensed matter physics , optics , quantum mechanics , materials science , optical fiber , quantum , telecommunications , computer science , ferromagnetism , statistics , mathematics , composite material
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.