Reducing decoherence of the confined exciton state in a quantum dot by pulse-sequence control

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dc.creatorAxt, V. M.
dc.creatorMachnikowski, P.
dc.creatorKuhn, T.
dc.date2004-08-13
dc.date2005-11-10
dc.date.accessioned2026-07-07T06:37:14Z
dc.date.available2026-07-07T06:37:14Z
dc.descriptionWe study the phonon-induced dephasing of the exciton state in a quantum dot excited by a sequence of ultra-short pulses. We show that the multiple-pulse control leads to a considerable improvement of the coherence of the optically excited state. For a fixed control time window, the optimized pulsed control often leads to a higher degree of coherence than the control by a smooth single Gaussian pulse. The reduction of dephasing is considerable already for 2-3 pulses.
dc.descriptionFinal version (moderate changes)
dc.identifierhttps://arxiv.org/abs/cond-mat/0408322
dc.identifierhttp://arxiv.org/abs/cond-mat/0408322
dc.identifierPhys. Rev. B 71 (2005) 155305
dc.identifierdoi:10.1103/PhysRevB.71.155305
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/100324
dc.subjectMesoscale and Nanoscale Physics
dc.titleReducing decoherence of the confined exciton state in a quantum dot by pulse-sequence control
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