Dynamics of Quantum Dot Nuclear Spin Polarization Controlled by a Single Electron

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dc.creatorMaletinsky, P.
dc.creatorBadolato, A.
dc.creatorImamoglu, A.
dc.date2007-04-27
dc.date.accessioned2026-07-07T08:21:37Z
dc.date.available2026-07-07T08:21:37Z
dc.descriptionWe present an experimental study of the dynamics underlying the buildup and decay of dynamical nuclear spin polarization in a single semiconductor quantum dot. Our experiment shows that the nuclei can be polarized on a time scale of a few milliseconds, while their decay dynamics depends drastically on external parameters. We show that a single electron can very efficiently depolarize the nuclear spins and discuss two processes that can cause this depolarization. Conversely, in the absence of a quantum dot electron, the lifetime of nuclear spin polarization is on the time scale of a second, most likely limited by the non-secular terms of the nuclear dipole-dipole interaction. We can further suppress this depolarization rate by 1-2 orders of magnitude by applying an external magnetic field exceeding 1 mT.
dc.description5 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0704.3684
dc.identifierhttp://arxiv.org/abs/0704.3684
dc.identifierPhys. Rev. Lett. 99, 056804 (2007)
dc.identifierdoi:10.1103/PhysRevLett.99.056804
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/135377
dc.subjectOptics
dc.subjectMesoscale and Nanoscale Physics
dc.subjectQuantum Physics
dc.titleDynamics of Quantum Dot Nuclear Spin Polarization Controlled by a Single Electron
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