Time-Resolved Measurement of a Charge Qubit

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dc.creatorReuther, Georg M.
dc.creatorZueco, David
dc.creatorHänggi, Peter
dc.creatorKohler, Sigmund
dc.date2008-06-17
dc.date2008-10-27
dc.date.accessioned2026-07-07T12:34:03Z
dc.date.available2026-07-07T12:34:03Z
dc.descriptionWe propose a scheme for monitoring coherent quantum dynamics with good time-resolution and low backaction, which relies on the response of the considered quantum system to high-frequency ac driving. An approximate analytical solution of the corresponding quantum master equation reveals that the phase of an outgoing signal, which can directly be measured in an experiment with lock-in technique, is proportional to the expectation value of a particular system observable. This result is corroborated by the numerical solution of the master equation for a charge qubit realized with a Cooper-pair box, where we focus on monitoring coherent oscillations.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0806.2786
dc.identifierhttp://arxiv.org/abs/0806.2786
dc.identifierPhys. Rev. Lett. 102, 033602 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.033602
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/217284
dc.subjectMesoscale and Nanoscale Physics
dc.subjectSuperconductivity
dc.subjectQuantum Physics
dc.titleTime-Resolved Measurement of a Charge Qubit
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