Towards experimental observation of parametrically squeezed states of microwave magnons in yttrium iron garnet films

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Towards experimental observation of parametrically squeezed states of microwave magnons in yttrium iron garnet films

M. Kostylev, A. B. Ustinov, A. V. Drozdovskii, B. A. Kalinikos, and E. Ivanov

Phys. Rev. B 100, 020401(R) – Published 1 July 2019

Abstract

We demonstrate theoretically and confirm experimentally that nonlinear spin waves excited in thin yttrium iron garnet films are good candidates for squeezing vacuum quantum noise. The experimental demonstration is in the form of a measurement of spin-wave induced modulation instability (IMI) conducted in the classical regime. The experiment evidences strong phase locking of an idler wave parametrically generated in the film with a deterministic small-signal wave launched into the film from an external source. The theory predicts that the same behavior will be observed for vacuum quantum noise, resulting in squeezing of the noise.

Received 11 September 2018
Revised 30 May 2019

DOI:https://doi.org/10.1103/PhysRevB.100.020401

Physics Subject Headings (PhySH)

Magnons Spin waves Squeezing of quantum noise

Condensed Matter, Materials & Applied PhysicsNonlinear DynamicsQuantum Information, Science & Technology

Authors & Affiliations

M. Kostylev^1,*, A. B. Ustinov², A. V. Drozdovskii², B. A. Kalinikos², and E. Ivanov¹

¹Department of Physics, The University of Western Australia, 6009 Crawley, Australia
²Department of Physical Electronics and Technology, Saint Petersburg Electrotechnical University “LETI,”Saint Petersburg 197376, Russia

^*mikhail.kostylev@uwa.edu.au

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Vol. 100, Iss. 2 — 1 July 2019

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