Dynamics of Quantum Dot Nuclear Spin Polarization Controlled by a Single Electron
arXiv:0704.3684 · doi:10.1103/PhysRevLett.99.056804
Abstract
We 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.
5 pages, 3 figures
References in corpus (9)
- Electron spin relaxation by nuclei in semiconductor quantum dots
- Optical pumping of electronic and nuclear spin in single charge-tunable quantum dots
- Knight Field Enabled Nuclear Spin Polarization in Single Quantum Dots
- Nuclear spin state narrowing via gate--controlled Rabi oscillations in a double quantum dot
- Nuclear Spin Switch in Semiconductor Quantum Dots
- Dynamic nuclear polarization of a single charge-tunable InAs/GaAs quantum dot
- Bistability of the Nuclear Polarisation created through optical pumping in InGaAs Quantum Dots
- Nonlinear dynamics of quantum dot nuclear spins
- Quantum Description of Nuclear Spin Cooling in a Quantum Dot
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