Details
| Original language | English |
|---|---|
| Article number | 156601 |
| Journal | Physical Review Letters |
| Volume | 112 |
| Issue number | 15 |
| Publication status | Published - 14 Apr 2014 |
Abstract
We advance spin noise spectroscopy to the ultimate limit of single spin detection. This technique enables the measurement of the spin dynamic of a single heavy hole localized in a flat (InGa)As quantum dot. Magnetic field and light intensity dependent studies reveal even at low magnetic fields a strong magnetic field dependence of the longitudinal heavy hole spin relaxation time with an extremely long T1 of ≥180μs at 31 mT and 5 K. The wavelength dependence of the spin noise power discloses for finite light intensities an inhomogeneous single quantum dot spin noise spectrum which is explained by charge fluctuations in the direct neighborhood of the quantum dot. The charge fluctuations are corroborated by the distinct intensity dependence of the effective spin relaxation rate.
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In: Physical Review Letters, Vol. 112, No. 15, 156601, 14.04.2014.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Optical spin noise of a single hole spin localized in an (InGa)as quantum dot
AU - Dahbashi, Ramin
AU - Hübner, Jens
AU - Berski, Fabian
AU - Pierz, Klaus
AU - Oestreich, Michael
PY - 2014/4/14
Y1 - 2014/4/14
N2 - We advance spin noise spectroscopy to the ultimate limit of single spin detection. This technique enables the measurement of the spin dynamic of a single heavy hole localized in a flat (InGa)As quantum dot. Magnetic field and light intensity dependent studies reveal even at low magnetic fields a strong magnetic field dependence of the longitudinal heavy hole spin relaxation time with an extremely long T1 of ≥180μs at 31 mT and 5 K. The wavelength dependence of the spin noise power discloses for finite light intensities an inhomogeneous single quantum dot spin noise spectrum which is explained by charge fluctuations in the direct neighborhood of the quantum dot. The charge fluctuations are corroborated by the distinct intensity dependence of the effective spin relaxation rate.
AB - We advance spin noise spectroscopy to the ultimate limit of single spin detection. This technique enables the measurement of the spin dynamic of a single heavy hole localized in a flat (InGa)As quantum dot. Magnetic field and light intensity dependent studies reveal even at low magnetic fields a strong magnetic field dependence of the longitudinal heavy hole spin relaxation time with an extremely long T1 of ≥180μs at 31 mT and 5 K. The wavelength dependence of the spin noise power discloses for finite light intensities an inhomogeneous single quantum dot spin noise spectrum which is explained by charge fluctuations in the direct neighborhood of the quantum dot. The charge fluctuations are corroborated by the distinct intensity dependence of the effective spin relaxation rate.
UR - http://www.scopus.com/inward/record.url?scp=84922992506&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.112.156601
DO - 10.1103/PhysRevLett.112.156601
M3 - Article
AN - SCOPUS:84922992506
VL - 112
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 15
M1 - 156601
ER -