Details
| Original language | English |
|---|---|
| Article number | 065703 |
| Journal | Journal of applied physics |
| Volume | 131 |
| Issue number | 6 |
| Publication status | Published - 14 Feb 2022 |
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.
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In: Journal of applied physics, Vol. 131, No. 6, 065703, 14.02.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Non-equilibrium spin noise spectroscopy of a single quantum dot operating at fiber telecommunication wavelengths
AU - Sun, Tian Jiao
AU - Sterin, P.
AU - Lengert, L.
AU - Nawrath, C.
AU - Jetter, M.
AU - Michler, P.
AU - Ji, Yang
AU - Hübner, J.
AU - Oestreich, M.
N1 - Funding Information: We acknowledge financial support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy—EXC-2123 QuantumFrontiers—390837967, and OE 177/10-2. T.-J.S. acknowledges financial support by the China Scholarship Council (CSC). C.N., M.J., and P.M. gratefully acknowledge the funding by the German Federal Ministry of Education and Research (BMBF) via the Project QR.X (No. 16KISQ013).
PY - 2022/2/14
Y1 - 2022/2/14
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85125041810&partnerID=8YFLogxK
U2 - 10.1063/5.0078910
DO - 10.1063/5.0078910
M3 - Article
AN - SCOPUS:85125041810
VL - 131
JO - Journal of applied physics
JF - Journal of applied physics
SN - 0021-8979
IS - 6
M1 - 065703
ER -