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Use of composite rotations to correct systematic errors in NMR quantum computation

Abstract:
We implement an ensemble quantum counting algorithm on three NMR spectrometers with 1 H resonance frequencies of 500, 600 and 750 MHz. At higher frequencies, the results deviate markedly from naive theoretical predictions. These systematic errors can be attributed almost entirely to off-resonance effects, which can be substantially corrected for using fully compensating composite rotation pulse sequences originally developed by Tycko. We also derive an analytic expression for generating such sequences with arbitrary rotation angles.
Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's version

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Publisher copy:
10.1088/1367-2630/2/1/006

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Institution:
University of Oxford
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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Atomic and Laser Physics, REF-Physics
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Funding agency for:
Cummins, HK
Publisher:
IOP Publishing Publisher's website
Journal:
New Journal of Physics Journal website
Volume:
2
Pages:
Article: 6
Publication date:
2000-03-05
DOI:
EISSN:
1367-2630
ISSN:
1367-2630
URN:
uuid:d07ac8f9-1d63-49b6-acb7-746778bb8d42
Source identifiers:
24896
Local pid:
pubs:24896

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