Probabilistic teleportation of multi-particle partially entangled state

• 来源期刊: 中国物理B（英文版）
• 关键词: quantum teleportation quantum circuits positive operator-valued measure unitary transformations
• 年，卷（期）: 2008,（3）
• 页码范围: 771-777
• 页数: 7页
• 语种: 英文

摘要

Utilizing the generalized measurement described by positive operator-valued measure, this paper comes up with a protocol for teleportation of an unknown multi-particle entangled (GHZ) state with a certain probability. The feature of the present protocol is to weaken requirement for the quantum channel initially shared by sender and receiver. All unitary transformations performed by receiver are summarized into a formula. On the other hand, this paper explicitlyconstructs the efficient quantum circuits for implementing the proposed teleportation by means of universal quantum logic operations in quantum computation.