本文提出了一种基于线性光学的多通道混合纠缠态方案。最初的混合纠缠态是在连续变量猫态和分离变量单光子量子比特之间产生。该方案基于线性光学元件,利用分束器在初始混合纠缠态基础上产生多通道混合纠缠态(M组)。在此基础上,对每对混合纠缠态相对初始混合纠缠态的保真度进行了计算,并分析了保真度随所分份数多少及猫态大小的变化关系。这种多通道混合纠缠态将会为涉及分离变量与连续变量的多通道量子信息传输及存储、量子网络节点信息分布等提供重要的资源。

We theoretically presented a protocol of multiplex hybrid entanglement manipulation by means of linear optics. Its realization is based on discrete-variable (DV) qubit—single photon qubit and continuous-variable (CV) optical qumodes—the cat states. This scheme depends on linear optical elements and results in M sets of hybrid entanglement between the cat states and the single photon qubit.The fidelity between the divided hybrid entanglement and the primary hybrid entanglement is calculated,and the fidelity versus the dimension of the cat states is also analyzed. This kind of multiplex hybrid entanglement will be an important resource for hybrid quantum information distribution and hybrid quantum information network.