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Entanglement enhanced by Kerr nonlinearity in a cavity-optomagnonics system

Authors :
Qing-Hao Zhu
Jin-Song Liu
Zhi-Bo Yang
Ai-Dong Zhu
Ying Ming
Hong-Yu Liu
Hua Jin
Rong-Can Yang
Source :
Optics express. 28(21)
Publication Year :
2020

Abstract

We present a method to enhance steady-state bipartite and tripartite entanglement in a cavity-optomagnonics system by utilizing the Kerr nonlinearity originating from the magnetocrystalline anisotropy. The system comprises two microwave cavities and a magnon and represents the collective motion of several spins in a macroscopic ferrimagnet. We prove that Kerr nonlinearity is reliable for the enhancement of entanglement and produces a small frequency shift in the optimal detuning. Our system is more robust against the environment-induced decoherence than traditional optomechanical systems. Finally, we briefly analyze the validity of the system and demonstrate its feasibility for detecting the generated entanglement.

Details

ISSN :
10944087
Volume :
28
Issue :
21
Database :
OpenAIRE
Journal :
Optics express
Accession number :
edsair.doi.dedup.....033b7ebce500089686a0ede46314d064