The possibility of using entangled states of the W class either as a quantum channel for teleportation or as states to be teleported is analyzed. The protocols are determined through the unitary transformation of the schemes based on the Greenberger-Horne-Zeilinger (GHZ) channel. It is shown that the main feature of new quantum channels of the W class is a set of nonlocal operators capable of recovering an unknown state. (C) 2003 MAIK "Nauka/Interperiodica".
机构:
Ludong Univ, Sch Math & Stat Sci, Yantai 264025, Peoples R ChinaLudong Univ, Sch Math & Stat Sci, Yantai 264025, Peoples R China
Zhu, Xue-Na
Fei, Shao-Ming
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Capital Normal Univ, Sch Math Sci, Beijing 100048, Peoples R China
Max Planck Inst Math Sci, D-04103 Leipzig, GermanyLudong Univ, Sch Math & Stat Sci, Yantai 264025, Peoples R China
机构:
Hangzhou City Univ, Sch Comp & Comp Sci, Hangzhou 310015, Peoples R ChinaHangzhou City Univ, Sch Comp & Comp Sci, Hangzhou 310015, Peoples R China
Xie, Bing
Li, Bo
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Hangzhou City Univ, Sch Comp & Comp Sci, Hangzhou 310015, Peoples R ChinaHangzhou City Univ, Sch Comp & Comp Sci, Hangzhou 310015, Peoples R China
Li, Bo
Hu, Bin
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East China Univ Technol, Dept Math, Nanchang 330013, Peoples R ChinaHangzhou City Univ, Sch Comp & Comp Sci, Hangzhou 310015, Peoples R China
Hu, Bin
Fei, Shao-Ming
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机构:
Capital Normal Univ, Sch Math Sci, Beijing 100048, Peoples R China
Max Planck Inst Math Sci, D-04103 Leipzig, GermanyHangzhou City Univ, Sch Comp & Comp Sci, Hangzhou 310015, Peoples R China
机构:
South China Agr Univ, Coll Math & Informat, Guangzhou 510642, Peoples R ChinaSouth China Agr Univ, Coll Math & Informat, Guangzhou 510642, Peoples R China
Cheng, Qi
Situ, Haozhen
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South China Agr Univ, Coll Math & Informat, Guangzhou 510642, Peoples R ChinaSouth China Agr Univ, Coll Math & Informat, Guangzhou 510642, Peoples R China
Situ, Haozhen
Huang, Qiong
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机构:
South China Agr Univ, Coll Math & Informat, Guangzhou 510642, Peoples R ChinaSouth China Agr Univ, Coll Math & Informat, Guangzhou 510642, Peoples R China
Huang, Qiong
Zhang, Cai
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South China Agr Univ, Coll Math & Informat, Guangzhou 510642, Peoples R ChinaSouth China Agr Univ, Coll Math & Informat, Guangzhou 510642, Peoples R China
机构:
South China Univ Technol, Sch Math, Guangzhou 510641, Peoples R China
Univ Oulu, Ctr Machine Vis & Signal Anal, Oulu 90570, FinlandSouth China Univ Technol, Sch Math, Guangzhou 510641, Peoples R China
Liang, Yanying
Zheng, Zhu-Jun
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机构:
South China Univ Technol, Sch Math, Guangzhou 510641, Peoples R China
South China Univ Technol, Lab Quantum Sci & Engn, Guangzhou 510641, Peoples R ChinaSouth China Univ Technol, Sch Math, Guangzhou 510641, Peoples R China
Zheng, Zhu-Jun
Zhu, Chuan-Jie
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机构:
Hunan Univ Arts & Sci, Coll Math & Phys Sci, Changde 415000, Peoples R ChinaSouth China Univ Technol, Sch Math, Guangzhou 510641, Peoples R China