资源描述：
《基于局域单激发共振诱导吸收的量子光学开关》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、Quantumopticalswitchingbasedonlocalsingle-excitation-resonanceinducedabsorptionY.H.Zhou1∗,D.D.Zou2,H.Z.Shen3,X.Y.Zhang4,Qi-ChengWu1,andChui-PingYang1†1QuantumInformationResearchCenter,ShangraoNormalUniversity,Shangrao334001,China2SchoolofPhysicsandElectronicInformation,ShangraoNormalUniversity,Shang
2、rao334001,China3CenterforQuantumSciencesandSchoolofPhysics,NortheastNormalUniversity,Changchun130024,China4DepartmentofPhysics,DalianMaritimeUniversity,Dalian116026,China(Dated:November16,2018)Wenotethattheall-opticalswitchingschemesarebasedonelectromagneticallyinducedtrans-parency.Inthispaper,wewil
3、lstudytheopticalswitchingbasedonanothermechanism,i.e.,localsingle-excitation-resonanceinducedabsorption.Theaverage-photon-numberdistributioninthesteadystateisstudiedinasystemoftwolinearlycoupledcavitieswithoneofwhichincludingatwo-levelatominside,wherethecavitywithouttheatomisdrivenbyaclassicallightfi
4、eld.Wefindthatthesteady-stateaveragephotonnumberoftheundrivencavitycanbemuchlargerthanthatofthedrivenonewhentheundrivencavityandtheatominsidesatisfysingle-excitationresonance,wenamethisasthelocalsingle-excitation-resonanceinducedabsorption.Sowecancontrolthesteady-stateaverage-photon-numberdistributio
5、nofthetwocavities,whichmeansthatourschemecanbeusedasaquantumopticalswitching.Ourfindingpavesanavenuetowardsthecontrolofthephotons,whichmayhaspotentialapplicationinquantuminformationandquantumcomputation.PACSnumbers:42.79.Ta,42.50.Pq,42.50.-p•INTRODUCTIONPhotonsareidealinformationcarriersbecausetheyp-
6、reservequantumstatesforalonglifetimeandrarelyin-teractwithstaticfieldsfromenvironment.Therefore,photonsareexcellentcandidateforquantuminforma-tion,buttheyalsorarelyinteractwitheachother,whichconflictstotherequirementofquantuminformationpro-cessing.Nevertheless,cavityquantumelectrodynamics(cavityQED)pr
7、ovidesausefulplatformtousethepho-tons,whichdescribesthecoherentinteractionbetweenphotonsandatomsconfinedwithinaresonatorstruc-ture[1–3].ThecavityQEDplaysacentralroleinthestudiesoffundamentalquantumproc
