Non-equilibrium spin noise spectroscopy of a single quantum dot operating at fiber telecommunication wavelengths

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Sun, T.-J.; Sterin, P.; Lengert, L.; Nawrath, C.; Jetter, M. et al.: Non-equilibrium spin noise spectroscopy of a single quantum dot operating at fiber telecommunication wavelengths. In: Journal of applied physics : AIP's archival journal for significant new results in applied physics 131 (2022), Nr. 6, 065703. DOI: https://doi.org/10.1063/5.0078910

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Abstract: 
We report on the spin and occupation noise of a single, positively charged (InGa)As quantum dot emitting photons in the telecommunication C-band. The spin noise spectroscopy measurements are carried out at a temperature of 4.2 K in dependence on intensity and detuning in the regime beyond thermal equilibrium. The spin noise spectra yield in combination with an elaborate theoretical model the hole-spin relaxation time of the positively charged quantum dot and the Auger recombination and the electron-spin relaxation time of the trion state. The extracted Auger recombination time of this quantum dot emitting at 1.55 μm is comparable to the typical Auger recombination times on the order of a few μs measured in traditionally grown InAs/GaAs quantum dots emitting at around 900 nm.
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2022
Appears in Collections:Fakultät für Mathematik und Physik

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1 image of flag of Germany Germany 36 64.29%
2 image of flag of United States United States 10 17.86%
3 image of flag of Netherlands Netherlands 3 5.36%
4 image of flag of France France 2 3.57%
5 image of flag of Taiwan Taiwan 1 1.79%
6 image of flag of Pakistan Pakistan 1 1.79%
7 image of flag of Iran, Islamic Republic of Iran, Islamic Republic of 1 1.79%
8 image of flag of Czech Republic Czech Republic 1 1.79%
9 image of flag of China China 1 1.79%

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