Using sequences of pulses to control coherence in an open quantum computing system

A method for quantum control of coherence in an open quantum computing system is presented. The approach was applied to finding a suitable control sequence for maintaining coherence in a silicon-based nuclear spin quantum computing system, subject to Bose-type environmental noise, and under the Born...

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Bibliographic Details
Published inJournal of applied physics Vol. 91; no. 11; pp. 9368 - 9374
Main Authors Qiao, Bi, Ruda, Harry E., Chang, J. F.
Format Journal Article
LanguageEnglish
Published 01.06.2002
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Summary:A method for quantum control of coherence in an open quantum computing system is presented. The approach was applied to finding a suitable control sequence for maintaining coherence in a silicon-based nuclear spin quantum computing system, subject to Bose-type environmental noise, and under the Born–Markovian and rotating wave approximations. It is shown that the evolution operator remains decoherence free while the three control pulses are being applied.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1473678