Dahbashi, R.; Hübner, J.; Berski, F.; Pierz, K.; Oestreich, M.: Optical spin noise of a single hole spin localized in an (InGa)as quantum dot. In: Physical Review Letters 112 (2014), Nr. 15, No. 156601. DOI:
https://doi.org/10.1103/PhysRevLett.112.156601
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 ?180?s 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. © 2014 American Physical Society.
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License of this version: |
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Publication type: |
Article |
Publishing status: |
publishedVersion |
Publication date: |
2014 |
Keywords english: |
Magnetic fields, Semiconductor quantum dots, Semiconductor quantum wells, Charge fluctuations, Intensity dependence, Low magnetic fields, Single quantum dot, Spin noise spectroscopy, Spin-relaxation rates, Strong magnetic fields, Wavelength dependence, Spin fluctuations
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DDC: |
530 | Physik
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