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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

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

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Institution:
University of Oxford
Role:
Author
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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
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Funding agency for:
Cummins, H
Publisher:
IOP Publishing Publisher's website
Journal:
New Journal of Physics Journal website
Volume:
2
Article number:
6
Publication date:
2000-03-01
DOI:
EISSN:
1367-2630
ISSN:
1367-2630
Source identifiers:
24896
UUID:
uuid:d07ac8f9-1d63-49b6-acb7-746778bb8d42
Local pid:
pubs:24896
Deposit date:
2012-12-19

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