Squeezing microwaves by magnetostriction

Author: Jie Li1, Yi-Pu Wang1, Jian-Qiang You1, Shi-Yao Zhu1
1 Interdisciplinary Center of Quantum Information, Zhejiang Province Key Laboratory of Quantum Technology and Device, and State Key Laboratory of Modern Optical Instrumentation, School of Physics, Zhejiang University, Hangzhou 310027, China.
Conference/Journal: Natl Sci Rev
Date published: 2022 Nov 3
Other: Volume ID: 10 , Issue ID: 5 , Pages: nwac247 , Special Notes: doi: 10.1093/nsr/nwac247. , Word Count: 128

Squeezed light finds many important applications in quantum information science and quantum metrology, and has been produced in a variety of physical systems involving optical non-linear processes. Here, we show how a non-linear magnetostrictive interaction in a ferrimagnet in cavity magnomechanics can be used to reduce quantum noise of the electromagnetic field. We show optimal parameter regimes where a substantial and stationary squeezing of the microwave output field can be achieved. Realization of the scheme is within reach of current technology in cavity electromagnonics and magnomechanics. Our work provides a new and practicable approach for producing squeezed vacuum states of electromagnetic fields, and may find promising applications in quantum information processing and quantum metrology.

Keywords: cavity magnonics; magnomechanics; squeezing of quantum noise.

PMID: 37228254 PMCID: PMC10205500 DOI: 10.1093/nsr/nwac247