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Spin Qubits Silicon Quantum Computing

Suppression of nuclear spin diffusion at a GaAs/AlGaAs interface measured with a single quantum dot nano-probe

arXiv
Authors: A. E. Nikolaenko, E. A. Chekhovich, M. N. Makhonin, I. W. Drouzas, A. B. Vankov, J. Skiba-Szymanska, M. S. Skolnick, P. Senellart, A. Lemaitre, A. I. Tartakovskii

Year

2009

Paper ID

9265

Status

Preprint

Abstract Read

~2 min

Abstract Words

72

Citations

N/A

Abstract

Nuclear spin polarization dynamics are measured in optically pumped individual GaAs/AlGaAs interface quantum dots by detecting the time-dependence of the Overhauser shift in photoluminescence (PL) spectra. Long nuclear polarization decay times of 1 minute have been found indicating inefficient nuclear spin diffusion from the GaAs dot into the surrounding AlGaAs matrix in externally applied magnetic field. A spin diffusion coefficient two orders lower than that previously found in bulk GaAs is deduced.

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  • Nuclear spin polarization dynamics are measured in optically pumped individual GaAs/AlGaAs interface quantum dots by detecting the time-dependence of the Overhauser shift in...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:0901.2281 [2] arXiv https://arxiv.org/abs/0901.2281 [3] Publisher https://arxiv.org/abs/0901.2281

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