Use of composite rotations to correct systematic errors in NMR quantum computation
New Journal of Physics 2 (2000)
Abstract:
We implement an ensemble quantum counting algorithm on three NMR spectrometers with 1H 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.NMR quantum computation: A critical evaluation
FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS 48:9-11 (2000) 909-924
Nuclear magnetic resonance: a quantum technology for computation and spectroscopy
CONTEMPORARY PHYSICS 41:6 (2000) 383-399
Tackling systematic errors in NMR quantum computations.
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY 220 (2000) U239-U239
Use of composite rotations to correct systematic errors in NMR quantum computation
NEW JOURNAL OF PHYSICS 2 (2000) ARTN 6