Quantum-state engineering using enhanced tripartite interactions in atom–photon–phonon hybrid systems  

作　　者：Yaowu Guo Jiaqiang Zhao Lianzhen Cao Yingde Li Hong-Yan Lu 郭耀武;赵加强;曹连振;李英德;路红艳

机构地区：[1]Department of Physics and Electronic Information,Weifang University,Weifang 261061,China [2]State Key Laboratory of Surface Physics and Laboratory of Advanced Materials,Department of Physics,Fudan University,Shanghai 200433,China [3]School of Physics and Physical Engineering,Qufu Normal University,Qufu 273165,China

出　　处：《Chinese Physics B》2025年第2期282-288,共7页中国物理B(英文版)

基　　金：supported by the National Natural Science Foundation of China(Grant No.12074213);the Natural Science Foundation of Shandong Province(Grant No.ZR2021MA078);the Research Project of the National Key Laboratory(Grant No.KF202004)。

摘　　要：We introduce a hybrid cavity optomechanical model capable of generating significant genuine tripartite interactions and entanglement among coherent degrees of freedom.However,realizing and controlling such tripartite interactions and their entanglement pose crucial challenges that remain largely unexplored.In this work,we predict a tripartite coupling mechanism within a hybrid quantum system consisting of a vibrating mechanical oscillator,a two-level atom and a singlefrequency cavity field.We specifically propose a mechanism for tripartite and cross-Kerr nonlinear coupling through displacement and squeezing transformations.By adjusting the optical amplitude of the pump light,we can effectively enhance these nonlinear couplings,facilitating the manipulation of entangled and squeezed states.The resulting tripartite genuine entanglement exhibits distinct evolutionary characteristics.Notably,when the pump light amplitude is large,the tripartite entanglement persists for longer time.Additionally,the phonon displays characteristics of both cooling and squeezing.Our study presents a pathway for exploring and exploiting controllable multipartite entanglement,as well as achieving phonon cooling and squeezing with the assistance of a mesoscopic harmonic oscillator.This work underscores the innovative potential of our model in advancing the field of optomechanics and quantum entanglement.

关 键 词：cross-Kerr nonlinear coupling tripartite coupling tripartite entanglement 

分 类 号：O41[理学—理论物理]