中国物理B ›› 2004, Vol. 13 ›› Issue (6): 817-823.doi: 10.1088/1009-1963/13/6/006

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Experimental realization of information transmission between not-directly-coupled spins on NMR quantum computers

魏达秀, 罗军, 杨晓冬, 孙献平, 曾锡之, 刘买利, 丁尚武, 詹明生   

  1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
  • 收稿日期:2003-06-25 修回日期:2004-02-16 出版日期:2004-07-05 发布日期:2005-07-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 2001CB309309), and the Knowledge Innovation Programme of the Chinese Academy of Sciences (Grant No KJCX2-W1).

Experimental realization of information transmission between not-directly-coupled spins on NMR quantum computers

Wei Da-Xiu (魏达秀), Luo Jun (罗军), Yang Xiao-Dong (杨晓冬), Sun Xian-Ping (孙献平), Zeng Xi-Zhi (曾锡之), Liu Mai-Li (刘买利), Ding Shang-Wu (丁尚武), Zhan Ming-Sheng (詹明生)   

  1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2003-06-25 Revised:2004-02-16 Online:2004-07-05 Published:2005-07-05
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 2001CB309309), and the Knowledge Innovation Programme of the Chinese Academy of Sciences (Grant No KJCX2-W1).

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摘要： This paper presents a simple scheme for information transmission between two non-directly interactive qubits in an n-qubit system. An example has been realized on a three-qubit nuclear magnetic resonance (NMR) spectrometer quantum computer. The experimental result successfully demonstrates that the feasible measure can also be extended to other quantum logical gates, or other quantum algorithms, where some qubits have no direct interactions in a multi-qubit system.

关键词: information transmission, quantum superdense coding, nuclear magnetic resonance spectrometer

Abstract: This paper presents a simple scheme for information transmission between two non-directly interactive qubits in an n-qubit system. An example has been realized on a three-qubit nuclear magnetic resonance (NMR) spectrometer quantum computer. The experimental result successfully demonstrates that the feasible measure can also be extended to other quantum logical gates, or other quantum algorithms, where some qubits have no direct interactions in a multi-qubit system.

Key words: information transmission, quantum superdense coding, nuclear magnetic resonance spectrometer

中图分类号:  (Quantum communication)

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