中国物理B ›› 2003, Vol. 12 ›› Issue (10): 1070-1075.doi: 10.1088/1009-1963/12/10/306

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Teleportation of a multiqubit state by an entangled qudit channel

郑亦庄1, 吴桂初1, 顾永建2, 郭光灿2   

  1. (1)Department of Physics, Wenzhou Normal College, Wenzhou 325027, China; (2)Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026, China
  • 收稿日期:2002-12-20 修回日期:2003-05-13 出版日期:2003-10-16 发布日期:2005-03-16
  • 基金资助:
    Project supported by the State Key Development Program for Basic Research of China (Grant No 2001CB309300) and the Natural Science Foundation of Zhejiang Province, China (Grant No 102068).

Teleportation of a multiqubit state by an entangled qudit channel

Zheng Yi-Zhuang (郑亦庄)a, Gu Yong-Jian (顾永建)b, Wu Gui-Chu (吴桂初)a, Guo Guang-Can (郭光灿)b   

  1. a Department of Physics, Wenzhou Normal College, Wenzhou 325027, China; b Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026, China
  • Received:2002-12-20 Revised:2003-05-13 Online:2003-10-16 Published:2005-03-16
  • Supported by:
    Project supported by the State Key Development Program for Basic Research of China (Grant No 2001CB309300) and the Natural Science Foundation of Zhejiang Province, China (Grant No 102068).

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摘要： We investigate the problem of teleportation of an M-qubit state by using an entangled qudit pair as a quantum channel and show that the teleportation of a multiparticle state can correspond to the teleportation of a multi-dimensional state. We also introduce a quantum-state converter composed of beamsplitter arrays, on/off-detectors and cross-Kerr couplers and demonstrate that the state conversion from an M-qubit to an N-dimensional qudit and vice versa can be implemented with this converter, where N=2^M. Based on this, an experimentally feasible scheme for the teleportation of an M-qubit via an entangled N-level qudit pair channel is proposed.

Abstract: We investigate the problem of teleportation of an M-qubit state by using an entangled qudit pair as a quantum channel and show that the teleportation of a multiparticle state can correspond to the teleportation of a multi-dimensional state. We also introduce a quantum-state converter composed of beamsplitter arrays, on/off-detectors and cross-Kerr couplers and demonstrate that the state conversion from an M-qubit to an N-dimensional qudit and vice versa can be implemented with this converter, where $N=2^M$. Based on this, an experimentally feasible scheme for the teleportation of an M-qubit via an entangled N-level qudit pair channel is proposed.

Key words: teleportation, multiqubit, qudit channel

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.67.Hk (Quantum communication) 03.67.Lx (Quantum computation architectures and implementations) 03.67.Mn (Entanglement measures, witnesses, and other characterizations)