中国物理B ›› 2003, Vol. 12 ›› Issue (3): 251-258.doi: 10.1088/1009-1963/12/3/302

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Quantum logic networks for probabilistic teleportation

张永生1, 郭光灿1, 刘金明2   

  1. (1)Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China; (2)Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China; Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 收稿日期:2002-07-09 修回日期:2002-10-11 出版日期:2003-03-16 发布日期:2005-03-16
  • 基金资助:
    Project supported by the National Fundamental Research Program (Grant No 2001CB309300) and the Innovation funds from Chinese Academy of Sciences.

Quantum logic networks for probabilistic teleportation

Liu Jin-Ming (刘金明)ab, Zhang Yong-Sheng (张永生)a, Guo Guang-Can (郭光灿)a   

  1. a Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China; b Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • Received:2002-07-09 Revised:2002-10-11 Online:2003-03-16 Published:2005-03-16
  • Supported by:
    Project supported by the National Fundamental Research Program (Grant No 2001CB309300) and the Innovation funds from Chinese Academy of Sciences.

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摘要： By means of the primitive operations consisting of single-qubit gates, two-qubit controlled-not gates, Von Neuman measurement and classically controlled operations, we construct efficient quantum logic networks for implementing probabilistic teleportation of a single qubit, a two-particle entangled state, and an N-particle entanglement. Based on the quantum networks, we show that after the partially entangled states are concentrated into maximal entanglement, the above three kinds of probabilistic teleportation are the same as the standard teleportation using the corresponding maximally entangled states as the quantum channels.

Abstract: By means of the primitive operations consisting of single-qubit gates, two-qubit controlled-not gates, Von Neuman measurement and classically controlled operations, we construct efficient quantum logic networks for implementing probabilistic teleportation of a single qubit, a two-particle entangled state, and an N-particle entanglement. Based on the quantum networks, we show that after the partially entangled states are concentrated into maximal entanglement, the above three kinds of probabilistic teleportation are the same as the standard teleportation using the corresponding maximally entangled states as the quantum channels.

Key words: probabilistic teleportation, entanglement, quantum circuit

中图分类号:  (Quantum state engineering and measurements)

  • 42.50.Dv
03.67.Hk (Quantum communication) 03.65.Ud (Entanglement and quantum nonlocality) 42.50.Pq (Cavity quantum electrodynamics; micromasers)