CAJ | 학술논문

两比特量子隐形传态的实现直接关系到量子计算机的实现,因此提出一个任意两比特量子态的隐形传态方案,发送者能成功地将此量子态几率地传送给接收者.此方案中,16个推广的非最大纠缠Bell态(简称G态)之一充当量子信道.发送者通过实行推广的Bell态测量(G态测量),接收者通过引入一个辅助粒子并实施适当的么正变换和单粒子测量,能将此任意两比特量子态以一定的几率发送给接收者.此种隐形传态方案的成功几率由量子信道系数绝对值的最小值所决定.
량비특양자은형전태적실현직접관계도양자계산궤적실현,인차제출일개임의량비특양자태적은형전태방안,발송자능성공지장차양자태궤솔지전송급접수자.차방안중,16개추엄적비최대규전Bell태(간칭G태)지일충당양자신도.발송자통과실행추엄적Bell태측량(G태측량),접수자통과인입일개보조입자병실시괄당적요정변환화단입자측량,능장차임의량비특양자태이일정적궤솔발송급접수자.차충은형전태방안적성공궤솔유양자신도계수절대치적최소치소결정.
Two-qubit quantum teleportation is closely related to quantum computation, so a teleportation protocol in which an arbitrary bipartite quantum state is perfectly teleported probabilistically from sender to receiver is proposed. One of 16 generalized non-maximally entangled Bell states (G states for simplicity) functions as quantum channel. The teleportation can be successfully realized with a certain probability if sender performs generalized Bell state measurements (G measurements) and receiver introduces an auxiliary particle and operates appropriate unitary transformations and single-qubit measurements. The probability of successful teleportation is determined by the smallest one among the coefficients' absolute values of the quantum channel.