马格农
微波食品加热
模式(计算机接口)
光电子学
传输(电信)
材料科学
微波传输
物理
凝聚态物理
电信
铁磁性
计算机科学
量子力学
操作系统
作者
Chen Zhijian,J. W. Rao,K. X. Zhao,Fan Yang,C. X. Wang,Bimu Yao,Wei Lü
摘要
We realize the electromagnetic regulation of nonreciprocal microwave transmission by introducing a pump-induced magnon mode (PIM) into a cavity magnonic device with dissipative photon–magnon coupling. As a peculiar spin wave, the PIM's dynamic properties, including its spin number and resonant frequency, can be easily tuned by the microwave pump. Hence, it facilitates the precise control of the coupling process between the PIM and the cavity magnonic device by regulating the pump signal. Along with these manipulations, the nonreciprocal microwave transmission produced by the dissipative photon–magnon coupling is regulated without reconfiguring the system. In the experiment, we achieve a pump-controlled nonreciprocal bandwidth of 16 MHz and a pump-tunable isolation range of up to 40 dB. Our work demonstrates the control of a microwave with another microwave. It has a great potential in the design of fast microwave switches and programmable isolators for information processing.
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