CAJ | 학술논문

利用克尔介质、偏振分束器、半波片和对强相干探测场的零拍探测,呈现了一个关于制备四光子偏振Diche态、GHZ态和W态的方案,当前量子光学实验技术条件均能有效满足该方案的要求.强的探测模相继和多个信号模光子相互作用,每次对于探测模而言,都会产生一个相位旋转.接下来,对探测模利用零拍探测,信号模可以投影得到想要的光子偏振纠缠态.此外,为了展现所制备的纠缠态作为重要的量子信息资源的价值,基于交叉相位调制进一步提出了一个隐形传送三光子偏振纠缠态的实验方案.
이용극이개질、편진분속기、반파편화대강상간탐측장적령박탐측,정현료일개관우제비사광자편진Diche태、GHZ태화W태적방안,당전양자광학실험기술조건균능유효만족해방안적요구.강적탐측모상계화다개신호모광자상호작용,매차대우탐측모이언,도회산생일개상위선전.접하래,대탐측모이용령박탐측,신호모가이투영득도상요적광자편진규전태.차외,위료전현소제비적규전태작위중요적양자신식자원적개치,기우교차상위조제진일보제출료일개은형전송삼광자편진규전태적실험방안.
A scheme is proposed for generating a four-photon polarized Dicke state,GreenbergerHorne-Zeilinger state,and W-type state.The scheme only uses Kerr medium,polarization beam splitters,half wave plates and homodyne measurement on the coherent light field,which can be efficiently achieved in quantum optical laboratories. Strong probe mode interacts successively with multiple signal-mode photons,each causing a conditional phase rotation in the probe mode.Subsequent homodyne measurement of the probe mode will project the signal mode photons into the desired entangled polarization-photon state. In addition,in order to show the power of prepared entanglement as a resource,we further propose an experimental scheme for teleporting an entangled three-photon polarization state,based on cross-phase modulation.