Stationary Entanglement between Light and Microwave via Ferromagnetic Magnons,Annalen Der Physik

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Stationary Entanglement between Light and Microwave via Ferromagnetic Magnons
Annalen Der Physik ( IF 2.2 ) Pub Date : 2020-10-04 , DOI: 10.1002/andp.202000250
Qizhi Cai _{1,

2} , Jinkun Liao _{1,

2} , Qiang Zhou _{1,

2}

Affiliation

It is shown how to generate stationary entanglement between light and microwave in a hybrid opto‐electro‐magnonical system which mainly consists of a microwave cavity, a yttrium iron garnet (YIG) sphere, and a nanofiber. The optical modes in nanofiber can evanescently be coupled to whispering gallery modes, that are able to interact with magnon mode via spin–orbit interaction, in YIG sphere, while the microwave cavity photons and magnons are coupled through magnetic dipole interaction simultaneously. Under reasonable parameter regimes, pretty amount of entanglement can be generated, and it also shows persistence against temperature. The present work is expected to provide a new perspective for building more advanced and comprehensive quantum networks along with magnons for fast‐developing quantum technologies and for studying the macroscopic quantum phenomena.

中文翻译：

铁磁磁振子在光和微波之间的固定纠缠

该图显示了如何在光电混合电磁系统中产生光与微波之间的固定纠缠，该系统主要由微波腔，钇铁石榴石（YIG）球和纳米纤维组成。纳米纤维中的光学模式可以van逝地耦合到耳语画廊模式，后者可以通过YIG球体中的自旋轨道相互作用与磁振子模式相互作用，而微波腔光子和磁振子同时通过磁偶极相互作用耦合。在合理的参数范围内，可以产生相当多的纠缠，并且还显示出对温度的持久性。

更新日期：2020-12-12

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