arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.10595quant-phcond-mat.mes-hallphysics.optics
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利用腔光磁效应研究两个大质量亚铁磁球之间的远程磁振子纠缠

Remote magnon entanglement between two massive ferrimagnetic spheres via cavity optomagnonics

Wei-Jiang Wu, Yi-Pu Wang, Jin-Ze Wu, Jie Li, J. Q. You

摘要:

最近的研究表明,基于磁振子的混合量子系统为产生包含大量自旋的宏观量子态提供了一个新的和有前途的平台。在这里,我们展示了如何纠缠两个磁振子模式在两个大规模的钇铁石榴石(YIG)球使用腔光磁,其中磁振子耦合到高品质的光学回音壁模式支持的YIG球。球体直径可达1 mm,每个球体包含多于$10^{18}$自旋。该方案是基于腔光磁效应中磁振子诱导布里渊散射产生的斯托克斯和反斯托克斯边带的不对称性。这使得人们可以利用斯托克斯和反斯托克斯散射过程,分别产生和验证纠缠。我们的工作表明,腔光磁系统是制备宏观量子态的一个很有前途的系统。

英文摘要:

Recent studies show that hybrid quantum systems based on magnonics provide a new and promising platform for generating macroscopic quantum states involving a large number of spins. Here we show how to entangle two magnon modes in two massive yttrium-iron-garnet (YIG) spheres using cavity optomagnonics, where magnons couple to high-quality optical whispering gallery modes supported by the YIG sphere. The spheres can be as large as 1 mm in diameter and each sphere contains more than $10^{18}$ spins. The proposal is based on the asymmetry of the Stokes and anti-Stokes sidebands generated by the magnon-induced Brillouin light scattering in cavity optomagnonics. This allows one to utilize the Stokes and anti-Stokes scattering process, respectively, for generating and verifying the entanglement. Our work indicates that cavity optomagnonics could be a promising system for preparing macroscopic quantum states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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