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Phys. Rev. A 62, 022304 (2000) [4 pages]

NMR quantum computation with indirectly coupled gates

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David Collins1, K. W. Kim1,*, W. C. Holton1, H. Sierzputowska-Gracz2, and E. O. Stejskal3
1Department of Electrical and Computer Engineering, Box 7911, North Carolina State University, Raleigh, North Carolina 27695-7911
2Department of Biochemistry, Box 7622, North Carolina State University, Raleigh, North Carolina 27695-7622
3Department of Chemistry, Box 8204, North Carolina State University, Raleigh, North Carolina 27695-8204

Received 3 February 2000; published 12 July 2000

An NMR realization of a two-qubit quantum gate which processes quantum information indirectly via couplings to a spectator qubit is presented in the context of the Deutsch-Jozsa algorithm. This enables a successful comprehensive NMR implementation of the Deutsch-Jozsa algorithm for functions with three argument bits and demonstrates a technique essential for multi-qubit quantum computation.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.62.022304
DOI:
10.1103/PhysRevA.62.022304
PACS:
03.67.Lx, 03.65.-w

*Author to whom correspondence should be addressed. Email address: kwk@eos.ncsu.edu

 
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