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Phys. Rev. A 70, 012314 (2004) [9 pages]

Search for optimum labeling schemes in qubit systems for quantum-information processing by nuclear magnetic resonance

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Ranabir Das1, Sukhendu Chakraborty2,*, K. Rukmani1,†, and Anil Kumar1,2,‡
1Department of Physics, Indian Institute of Science, Bangalore, India
2Sophisticated Instruments Facility, Indian Institute of Science, Bangalore, India

Received 4 February 2004; published 29 July 2004

Optimal labeling schemes lead to efficient experimental protocols for quantum-information processing by nuclear magnetic resonance (NMR). A systematic approach to finding optimal labeling schemes for a given computation is described here. The scheme is described for both quadrupolar systems and spin-1/2 systems. Using the technique of transition selective pulses, one of the optimal labeling schemes has been applied to experimentally implement a quantum full adder in a four-qubit system by NMR.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.70.012314
DOI:
10.1103/PhysRevA.70.012314
PACS:
03.67.Lx

*Present address: Department on Computer Science, Duke University, Durham, NC, USA.

†Present address: Department of Physics, Bangalore University, Bangalore, India.

‡Corresponding author: Email address: anilnmr@physics.iisc.ernet.in

 
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