Nonreciprocal entanglement of ferrimagnetic magnons and nitrogen-vacancy-center ensembles by Kerr nonlinearity

Deyi Kong, Jun Xu, and Fei Wang

Phys. Rev. Applied 21, 034061 – Published 28 March 2024

Abstract

We propose a scheme to generate nonreciprocal entanglement between an yttrium iron garnet (YIG) sphere and two nitrogen-vacancy-center ensembles by magnon Kerr effects in a transmission-line resonator. By driving the YIG sphere appropriately, strong Kerr nonlinearities emerge and then induce magnon parametric amplification and magnon frequency shift, resulting in the appearance of optimal entanglements. Depending on the direction of the bias magnetic field, macroscopic nonreciprocal entanglement is realized in this all-solid-state quantum system, which may find potential applications in chiral quantum information processing.

Received 12 December 2023
Revised 19 February 2024
Accepted 14 March 2024

DOI:https://doi.org/10.1103/PhysRevApplied.21.034061

Physics Subject Headings (PhySH)

Magneto-optical Kerr effect Magnons NV centers Non-reciprocal propagation Quantum entanglement Quantum information with hybrid systems Quantum optics

Magnetic insulators

Atomic, Molecular & OpticalQuantum Information, Science & TechnologyCondensed Matter, Materials & Applied Physics

Authors & Affiliations

Deyi Kong ¹, Jun Xu², and Fei Wang^1,*

¹School of Science, Hubei University of Technology, Wuhan 430068, China
²College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China

^*Corresponding author: feiwang@hbut.edu.cn

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Vol. 21, Iss. 3 — March 2024

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Physical Review Applied