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Phys. Rev. A 61, 022307 (2000) [5 pages]

Experimental implementation of dense coding using nuclear magnetic resonance

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Ximing Fang*, Xiwen Zhu†, Mang Feng, Xi’an Mao, and Fei Du
Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institution of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 People’s Republic of China

Received 1 July 1999; revised 24 September 1999; published 13 January 2000

Quantum dense coding has been demonstrated experimentally in terms of quantum logic gates and circuits in quantum computation and NMR technique. Two bits of information have been transmitted through manipulating one of the maximally entangled two-state quantum pairs, which is completely consistent with the original ideal of the Bennett-Wiesner proposal. Although information transmission happens between spins over interatomic distance, the scheme of entanglement transformation and measurement can be used in other processes of quantum information and quantum computing.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.61.022307
DOI:
10.1103/PhysRevA.61.022307
PACS:
03.67.Hk, 03.65.Bz, 89.70.+c, 89.80.+h

*Present address: Department of Physics, Hunan Normal University, Changsha 410081 People’s Republic of China.

†Author to whom correspondence should be addressed. Electronic address: xwzhu@nmr.whcnc.ac.cn

 
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