Interplay and optimization of decoherence mechanisms in the optical control of spin quantum bits implemented on a semiconductor quantum dot

Simple item page
dc.creatorGrodecka, A.
dc.creatorWeber, C.
dc.creatorMachnikowski, P.
dc.creatorKnorr, A.
dc.date2007-06-13
dc.date2009-04-27
dc.date.accessioned2026-07-07T13:08:13Z
dc.date.available2026-07-07T13:08:13Z
dc.descriptionWe study the influence of the environment on an optically induced rotation of a single electron spin in a charged semiconductor quantum dot. We analyze the decoherence mechanisms resulting from the dynamical lattice response to the charge evolution induced in a trion-based optical spin control scheme. Moreover, we study the effect of the finite trion lifetime and of the imperfections of the unitary evolution such as off-resonant excitations and the nonadiabaticity of the driving. We calculate the total error of the operation on a spin-based qubit in an InAs/GaAs quantum dot system and discuss possible optimization against the different contributions. We indicate the parameters which allow for coherent control of the spin with a single qubit gate error as low as $10^{-4}$.
dc.descriptionFinal version, 14 pages, 11 figures
dc.identifierhttps://arxiv.org/abs/0706.1989
dc.identifierhttp://arxiv.org/abs/0706.1989
dc.identifierPhys. Rev. B 76, 205305 (2007)
dc.identifierdoi:10.1103/PhysRevB.76.205305
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/228351
dc.subjectMesoscale and Nanoscale Physics
dc.subjectQuantum Physics
dc.titleInterplay and optimization of decoherence mechanisms in the optical control of spin quantum bits implemented on a semiconductor quantum dot
dc.typetext

Files

Collections

arXiv