Chiral cavity-magnonic system for the unidirectional emission of a tunable squeezed microwave field

• URL: http://arxiv.org/abs/2308.15826v1
• Date: Wed, 30 Aug 2023 08:02:16 GMT
• Title: Chiral cavity-magnonic system for the unidirectional emission of a tunable squeezed microwave field
• Authors: Ji-kun Xie, Sheng-li Ma, Ya-long Ren, Shao-yan Gao, and Fu-li Li
• Abstract summary: The unidirectional emission of a tunable squeezed microwave field can be generated via the assistance of the dissipative magnon mode and a waveguide. Our work opens up an avenue to create and manipulate one-way nonclassical microwave radiation field and could find potential quantum technological applications.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Unidirectional photon emission is crucial for constructing quantum networks and realizing scalable quantum information processing. In the present work an efficient scheme is developed for the unidirectional emission of a tunable squeezed microwave field. Our scheme is based on a chiral cavity magnonic system, where a magnon mode in a single-crystalline yttrium iron garnet (YIG) sphere is selectively coupled to one of the two degenerate rotating microwave modes in a torus-shaped cavity with the same chirality. With the YIG sphere driven by a two-color Floquet field to induce sidebands in the magnon-photon coupling, we show that the unidirectional emission of a tunable squeezed microwave field can be generated via the assistance of the dissipative magnon mode and a waveguide. Moreover, the direction of the proposed one-way emitter can be controlled on demand by reversing the biased magnetic field. Our work opens up an avenue to create and manipulate one-way nonclassical microwave radiation field and could find potential quantum technological applications.

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