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We propose a molecular optomechanical platform to generate robust entanglement among bosonic modes-photons, phonons, and plasmons-under ambient conditions. The system integrates an ultrahigh-Q whispering-gallery-mode (WGM) optical resonator…

Quantum Physics · Physics 2025-05-28 Hong-Yun Yu , Ya-Feng Jiao , Jie Wang , Feng Li , Bin Yin , Tian Jiang , Qi-Rui Liu , Hui Jing , Ke Wei

We experimentally implement a system of cavity optomagnonics, where a sphere of ferromagnetic material supports whispering gallery modes (WGMs) for photons and the magnetostatic mode for magnons. We observe pronounced nonreciprocity and…

Quantum Physics · Physics 2016-06-08 A. Osada , R. Hisatomi , A. Noguchi , Y. Tabuchi , R. Yamazaki , K. Usami , M. Sadgrove , R. Yalla , M. Nomura , Y. Nakamura

Cavity-magnon systems, combining magnons and photons, offer a versatile platform for studying quantum entanglement and advancing quantum information science. In this work, we propose a scheme for generating nonreciprocal magnon-magnon…

Quantum Physics · Physics 2026-05-15 Zhisheng Xu , Mengxue Li , Chunfang Sun , Gangcheng Wang

We propose an optomechanical scheme for reaching quantum entanglement in vibration polaritons. The system involves $N$ molecules, whose vibrations can be fairly entangled with plasmonic cavities. We find that the vibration-photon…

Quantum Physics · Physics 2024-05-28 Jian Huang , Dangyuan Lei , Girish S. Agarwal , Zhedong Zhang

Cavity optomechanics, a promising platform to investigate macroscopic quantum effects, has been widely used to study nonreciprocal entanglement with Sagnec effect. Here we propose an alternative way to realize nonreciprocal entanglemment…

Quantum Physics · Physics 2023-08-08 Jiaojiao Chen , Xiao-Gang Fan , Wei Xiong , Dong Wang , Liu Ye

We study nonreciprocal bipartite and tripartite entanglement in a spinning exciton-optomechanical system (EOMS) with an optical parametric amplifier (OPA). We demonstrate that nonreciprocal entanglement among photons, excitons, and phonons…

Quantum Physics · Physics 2026-03-03 Zhen-Sen Lin , Rui Zhang , Zi-Wei Jiang , Wen-Quan Yang , Ya-Feng Jiao , Hui Jing , Le-Man Kuang

Entanglement between distant massive mechanical oscillators is of particular interest in quantum-enabled devices due to its potential applications in distributed quantum information processing. Here we propose how to achieve nonreciprocal…

Quantum Physics · Physics 2022-12-06 Ya-Feng Jiao , Jing-Xue Liu , Ying Li , Ronghua Yang , Le-Man Kuang , Hui Jing

We propose a new mechanism to achieve nonreciprocal quantum entanglement in a cavity magnomechanical system by exploiting the chiral cavity-magnon coupling. The system consists of a magnon mode, a mechanical vibration mode, and two…

Quantum Physics · Physics 2025-10-07 Zhi-Yuan Fan , Xuan Zuo , Hao-Tian Li , Jie Li

We propose a scheme able to generate stationary continuous variable entanglement between an optical and a microwave cavity mode by means of their common interaction with a micro-mechanical resonator. We show that when both cavities are…

Quantum Physics · Physics 2011-11-09 Sh. Barzanjeh , D. Vitali , P. Tombesi , G. J. Milburn

Microwave-optical entanglement is essential for efficient quantum communication, secure information transfer, and integrating microwave and optical quantum systems to advance hybrid quantum technologies. In this work, we demonstrate how the…

Quantum Physics · Physics 2025-04-30 Ming-Yue Liu , Yuan Gong , Jiaojiao Chen , Yan-Wei Wang , Wei Xiong

Ultrahigh nonreciprocal transmission has been achieved in a cavity-magnon system, which consists of two whispering gallery modes (WGMs) and a single magnon mode within a magnetic insulator yttrium iron garnet sphere. The nonreciprocal…

Quantum Physics · Physics 2025-12-05 Zhe-Qi Yang , Si-Qi Lin , Zhi-Rong Zhong

We propose to manipulate the statistic properties of the photons transport nonreciprocally via quadratic optomechanical coupling. We present a scheme to generate quadratic optomechanical interactions in the normal optical modes of a…

Quantum Physics · Physics 2020-07-31 Xun-Wei Xu , Yan-Jun Zhao , Hui Wang , Hui Jing , Ai-Xi Chen

The generation and control of entanglement in a quantum mechanical system is a critical element of nearly all quantum applications. Molecular systems are a promising candidate, with numerous degrees of freedom able to be targeted. However,…

Quantum Physics · Physics 2023-07-28 Davis M. Welakuh , Spyros Tserkis , Scott E. Smart , Prineha Narang

We propose a scheme for enhancing bipartite quantum entanglement in a double-cavity molecular optomechanical (McOM) system incorporating an intracavity optical parametric amplifier (OPA). Utilizing a set of linearized quantum Langevin…

Quantum Physics · Physics 2025-08-28 E Kongkui Berinyuy , C. Tchodimou , P. Djorwe , A. -H. Abdel-Aty , K. S. Nisar , S. G. Nana Engo

We propose a method to generate entangled states of the vibrational modes of N membranes which are coupled to a cavity mode via the radiation pressure. Using sideband excitations, we show that arbitrary entangled states of vibrational modes…

Quantum Physics · Physics 2013-09-17 Xun-Wei Xu , Yan-Jun Zhao , Yu-xi Liu

Quantum entanglement, a key element for quantum information is generated with a cavity-magnomechanical system. It comprises of two microwave cavities, a magnon mode and a vibrational mode, and the last two elements come from a YIG sphere…

Quantum Physics · Physics 2021-01-26 Zhi-Bo Yang , Jin-Song Liu , Ai-Dong Zhu , Hong-Yu Liu , Rong-Can Yang

Microwave-optics entanglement is a vital component for building hybrid quantum networks. Here, a new mechanism for preparing stationary entanglement between microwave and optical cavity fields in a cavity optomagnomechanical system is…

Quantum Physics · Physics 2024-01-31 Zhi-Yuan Fan , Liu Qiu , Simon Gröblacher , Jie Li

Optomechanical generation of entangled optical beams is usually hindered by thermal noise. We present a theoretical study of low frequency entanglement generation between two optical harmonics emitted from a cavity optomechanical system…

Quantum Physics · Physics 2025-12-03 Alexandr V. Karpenko , Andrey B. Matsko , Sergey P. Vyatchanin

Nonreciprocal physics is attracting significant interest in quantum information processing. In this work, we propose a scheme to investigate the nonreciprocity of bi- and tripartite entanglement and generate squeezed states in a…

Quantum Physics · Physics 2025-10-14 Hamza Harraf , Noura Chabar , Mohamed Amazioug , Rachid Ahl Laamara , Mojtaba Mazaheri

We present a theoretical framework for a $\mathcal{PT}$-symmetric double-cavity molecular optomechanical system demonstrating nonreciprocal enhancement of multipartite quantum entanglement at elevated temperatures. All bipartite…

Quantum Physics · Physics 2026-01-01 E. Kongkui Berinyuy , C. Tchodimou , P. Djorwé , S. K. Singh , S. G. Nana Engo
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