Optimal strategy for a single-qubit gate and trade-off between opposite types of decoherence

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dc.creatorAlicki, Robert
dc.creatorHorodecki, Michal
dc.creatorHorodecki, Pawel
dc.creatorHorodecki, Ryszard
dc.creatorJacak, Lucjan
dc.creatorMachnikowski, Pawel
dc.date2003-02-08
dc.date2005-01-14
dc.date.accessioned2026-07-07T06:06:05Z
dc.date.available2026-07-07T06:06:05Z
dc.descriptionWe study reliable quantum information processing (QIP) under two different types of environment. First type is Markovian exponential decay, and the appropriate elementary strategy of protection of qubit is to apply fast gates. The second one is strongly non-Markovian and occurs solely during operations on the qubit. The best strategy is then to work with slow gates. If the two types are both present, one has to optimize the speed of gate. We show that such a trade-off is present for a single-qubit operation in a semiconductor quantum dot implementation of QIP, where recombination of exciton (qubit) is Markovian, while phonon dressing gives rise to the non-Markovian contribution.
dc.description4 pages, 1 figure; final version
dc.identifierhttps://arxiv.org/abs/quant-ph/0302058
dc.identifierhttp://arxiv.org/abs/quant-ph/0302058
dc.identifierPhys. Rev. A 70, 010501(R) (2004)
dc.identifierdoi:10.1103/PhysRevA.70.010501
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/90857
dc.subjectQuantum Physics
dc.subjectCondensed Matter
dc.titleOptimal strategy for a single-qubit gate and trade-off between opposite types of decoherence
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