Microwave‐Optics Entanglement via Coupled Opto‐ and Magnomechanical Microspheres

IF 9.8 1区 物理与天体物理 Q1 OPTICS
Hao‐Tian Li, Zhi‐Yuan Fan, Huai‐Bing Zhu, Simon Gröblacher, Jie Li
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Abstract

Microwave‐optics entanglement plays a crucial role in building hybrid quantum networks with quantum nodes working in the microwave and optical frequency bands. However, there are limited efficient ways to produce such entanglement due to the large frequency mismatch between the two regimes. Here, a new mechanism is presented to prepare microwave‐optics entanglement based on a hybrid system of two coupled opto‐ and magnomechanical microspheres, i.e., an yttrium‐iron‐garnet (YIG) sphere and a silica sphere. The YIG sphere holds a magnon mode and a vibration mode induced by magnetostriction, while the silica sphere supports an optical whispering‐gallery mode and a mechanical mode coupled via an optomechanical interaction. The two mechanical modes are close in frequency and directly coupled via physical contact of the two microspheres. It is shown that by simultaneously activating the magnomechanical (optomechanical) Stokes (anti‐Stokes) scattering, stationary entanglement can be established between the magnon and optical modes via mechanics‐mechanics coupling. This leads to stationary microwave‐optics entanglement by further coupling the YIG sphere to a microwave cavity and utilizing the magnon‐microwave state swapping. The protocol is within reach of current technology and may become a promising new approach for preparing microwave‐optics entanglement, which finds unique applications in hybrid quantum networks and quantum information processing with hybrid quantum systems.
通过耦合光学和磁机械微球的微波光学纠缠
微波-光学纠缠在构建混合量子网络中起着至关重要的作用,量子节点工作在微波和光学频段。然而,由于两种体制之间存在较大的频率不匹配,产生这种纠缠的有效方法有限。本文提出了一种制备微波光学纠缠的新机制,该机制基于两个耦合的光-磁-力微球(即钇-铁-石榴石球和硅球)的混合系统。YIG球具有磁致伸缩诱导的磁振子模式和振动模式,而二氧化硅球支持光学低语通道模式和通过光-力学相互作用耦合的机械模式。这两种力学模式频率接近,并通过两个微球的物理接触直接耦合。结果表明,通过同时激活磁力学(光力学)Stokes(反Stokes)散射,可以通过力学-力学耦合在磁振子和光学模式之间建立稳态纠缠。通过进一步将YIG球耦合到微波腔中并利用磁振子-微波状态交换,这导致了固定的微波光学纠缠。该协议在当前技术范围内,可能成为制备微波光学纠缠的一种有前途的新方法,在混合量子网络和混合量子系统的量子信息处理中具有独特的应用。
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来源期刊
CiteScore
14.20
自引率
5.50%
发文量
314
审稿时长
2 months
期刊介绍: Laser & Photonics Reviews is a reputable journal that publishes high-quality Reviews, original Research Articles, and Perspectives in the field of photonics and optics. It covers both theoretical and experimental aspects, including recent groundbreaking research, specific advancements, and innovative applications. As evidence of its impact and recognition, Laser & Photonics Reviews boasts a remarkable 2022 Impact Factor of 11.0, according to the Journal Citation Reports from Clarivate Analytics (2023). Moreover, it holds impressive rankings in the InCites Journal Citation Reports: in 2021, it was ranked 6th out of 101 in the field of Optics, 15th out of 161 in Applied Physics, and 12th out of 69 in Condensed Matter Physics. The journal uses the ISSN numbers 1863-8880 for print and 1863-8899 for online publications.
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