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Remote State Preparation via a Non—Maximally Entangled Channel
引用本文:郑亦庄,顾永建,等.Remote State Preparation via a Non—Maximally Entangled Channel[J].中国物理快报,2002,19(1):14-16.
作者姓名:郑亦庄  顾永建
作者单位:[1]LaboratoryofQuantumCommunicationandQuantumComputation,UniversityofScienceandTechnologyofChina,Hefei230026 [2]DepartmentofPhysics,WeifangUniversity,Weifang261043
摘    要:We investigate remote state preparation (RSP) via a non-maximally entangled channel for three cases:a general qubit;a special ensemble of qubits (qubit states on the equator of the Bloch sphere);and an asymptotic limit of N copies of a general state.The results show that the classical communication cost of RSP for the two latter cases can be less than that of teleportation,but for the first case,in a restricted setting,the classical communication cost is equal to that of teleportation.Whether or not this is the case for a more general setting is still an open question.

关 键 词:信息处理  交缠道  远程态备制
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