Phonon Decoherence of a Double Quantum Dot Charge Qubit

Simple item page
dc.creatorVorojtsov, Serguei
dc.creatorMucciolo, Eduardo R.
dc.creatorBaranger, Harold U.
dc.date2004-12-08
dc.date2005-05-03
dc.date.accessioned2026-07-07T03:02:34Z
dc.date.available2026-07-07T03:02:34Z
dc.descriptionWe study decoherence of a quantum dot charge qubit due to coupling to piezoelectric acoustic phonons in the Born-Markov approximation. After including appropriate form factors, we find that phonon decoherence rates are one to two orders of magnitude weaker than was previously predicted. We calculate the dependence of the Q-factor on lattice temperature, quantum dot size, and interdot coupling. Our results suggest that mechanisms other than phonon decoherence play a more significant role in current experimental setups.
dc.descriptionRevTex, 7 pages, 5 figures. v2: appendix added, more details provided. Accepted for publication in PRB
dc.identifierhttps://arxiv.org/abs/cond-mat/0412190
dc.identifierhttp://arxiv.org/abs/cond-mat/0412190
dc.identifierPhys. Rev. B 71, 205322 (2005) (7 pages)
dc.identifierdoi:10.1103/PhysRevB.71.205322
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25436
dc.subjectMesoscale and Nanoscale Physics
dc.titlePhonon Decoherence of a Double Quantum Dot Charge Qubit
dc.typetext

Files

Collections

arXiv