Coherence stabilization of a two-qubit gate by AC fields

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dc.creatorRomero, Karen M. Fonseca
dc.creatorKohler, Sigmund
dc.creatorHänggi, Peter
dc.date2004-09-30
dc.date.accessioned2026-07-07T06:19:45Z
dc.date.available2026-07-07T06:19:45Z
dc.descriptionWe consider a CNOT gate operation under the influence of quantum bit-flip noise and demonstrate that ac fields can change bit-flip noise into phase noise and thereby improve coherence up to several orders of magnitude while the gate operation time remains unchanged. Within a high-frequency approximation, both purity and fidelity of the gate operation are studied analytically. The numerical treatment with a Bloch-Redfield master equation confirms the analytical results.
dc.description4 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0409774
dc.identifierhttp://arxiv.org/abs/cond-mat/0409774
dc.identifierPhys. Rev. Lett. 95, 140502 (2005)
dc.identifierdoi:10.1103/PhysRevLett.95.140502
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/95137
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStatistical Mechanics
dc.titleCoherence stabilization of a two-qubit gate by AC fields
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