中国物理B ›› 2005, Vol. 14 ›› Issue (5): 898-901.doi: 10.1088/1009-1963/14/5/007

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Quantum logic networks for controlled teleportation of a single particle via W state　　　

齐开国1, 袁洪春2   

  1. (1)Department of Physics, University of Science and Technology of China, Hefei 230026, China; (2)Department of Physics, University of Science and Technology of China, Hefei 230026, China；Department of Physics, Huaibei Coal Industry Teachers’ College, Huaibei 235000, China
  • 收稿日期:2004-09-21 修回日期:2004-12-02 出版日期:2005-05-19 发布日期:2005-05-19

Quantum logic networks for controlled teleportation of a single particle via W state

Yuan Hong-Chun (袁洪春)ab, Qi Kai-Guo (齐开国)a   

  1. a Department of Physics, University of Science and Technology of China, Hefei 230026, China; b Department of Physics, Huaibei Coal Industry Teachers’ College, Huaibei 235000, China
  • Received:2004-09-21 Revised:2004-12-02 Online:2005-05-19 Published:2005-05-19

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摘要： We discuss the scheme for probabilistic and controlled teleportation of an unknown state of one particle using the general three-particle W state as the quantum channel. The feature of this scheme is that teleportation between two sides depends on the agreement of the third side (Charlie), who may participate the process of quantum teleportation as a supervisor. In addition, we also construct efficient quantum logic networks for implementing the new scheme by means of the primitive operations.

关键词: controlled teleportation, W state, quantum circuit

Abstract: We discuss the scheme for probabilistic and controlled teleportation of an unknown state of one particle using the general three-particle W state as the quantum channel. The feature of this scheme is that teleportation between two sides depends on the agreement of the third side (Charlie), who may participate the process of quantum teleportation as a supervisor. In addition, we also construct efficient quantum logic networks for implementing the new scheme by means of the primitive operations.

Key words: controlled teleportation, W state, quantum circuit

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