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
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.
Received: 20 December 2002
Revised: 13 May 2003
Accepted manuscript online:
(Entanglement measures, witnesses, and other characterizations)
Fund: 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).
Cite this article:
Zheng Yi-Zhuang (郑亦庄), Gu Yong-Jian (顾永建), Wu Gui-Chu (吴桂初), Guo Guang-Can (郭光灿) Teleportation of a multiqubit state by an entangled qudit channel 2003 Chinese Physics 12 1070
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