首页|Microwave amplification in a PT-symmetric-like cavity magnomechanical system

Microwave amplification in a PT-symmetric-like cavity magnomechanical system

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  • NSTL
  • Elsevier
We propose a scheme that can generate tunable magnomechanically induced amplification in a double-cavity parity-time-(PT-) symmetric-like magnomechanical system under a strong control and weak probe field. The system consists of a ferromagnetic-material yttrium iron garnet (YIG) sphere placed in a passive microwave cavity which is connected with another active cavity. We reveal that ideally induced amplification of the microwave probe signal may reach the maximum value 106 when cavity-cavity, cavity-magnon and magnomechanical coupling strengths are nonzero simultaneously. Besides, we also find the phenomenon of slow-light propagation. In this case, group speed delay of the light can achieve 35 x 10(-5)s, which can enhance some nonlinear effect. Moreover, due to the relatively flat dispersion curve, the proposal may be applied to sensitive optical switches, which play an important role in storing photons and quantum optical chips.

Tunable magnomechanically induced amplificationDouble-cavity parity-time-(PT-) symmetric-likeFerromagnetic-material yttrium iron garnet (YIG)Quantum information processingQuantum optical devicesSlow-light propagationSensitive optical switchesQuantum optical chipsELECTROMAGNETICALLY INDUCED TRANSPARENCY

Jin, Hua、Yang, Zhi-Bo、Jin, Jing-Wen、Liu, Jian-Yu、Liu, Hong-Yu、Yang, Rong-Can

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Yanbian Univ

Fujian Normal Univ

2022

10.1016/j.ijleo.2022.169035

Optik

Optik

EISCI
ISSN：0030-4026
年,卷(期)：2022.260
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