Electron Spin Dephasing due to Hyperfine Interactions with a Nuclear Spin Bath

Simple item page
dc.creatorCywinski, L.
dc.creatorWitzel, W. M.
dc.creatorSarma, S. Das
dc.date2008-08-29
dc.date2009-02-03
dc.date.accessioned2026-07-07T12:36:43Z
dc.date.available2026-07-07T12:36:43Z
dc.descriptionWe investigate pure dephasing decoherence (free induction decay and spin echo) of a spin qubit interacting with a nuclear spin bath. While for infinite magnetic field B the only decoherence mechanism is spectral diffusion due to dipolar flip-flops of nuclear spins, with decreasing B the hyperfine-mediated interactions between the nuclear spins become important. We give a theory of decoherence due to these interactions which takes advantage of their long-range nature. For a thermal uncorrelated bath we show that our theory is applicable down to B~10 mT, allowing for comparison with recent experiments in GaAs quantum dots.
dc.descriptionPublished version, new title suggested by the PRL editor
dc.identifierhttps://arxiv.org/abs/0809.0003
dc.identifierhttp://arxiv.org/abs/0809.0003
dc.identifierPhys. Rev. Lett. 102, 057601 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.057601
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/218192
dc.subjectMesoscale and Nanoscale Physics
dc.subjectQuantum Physics
dc.titleElectron Spin Dephasing due to Hyperfine Interactions with a Nuclear Spin Bath
dc.typetext

Files

Collections

arXiv