Spin and reoccupation noise beyond the fluctuation-dissipation theorem

Author
Wiegand, J · Smirnov, D. S · Hübner, J · Glazov, M. M · Oestreich, M
Year 2017
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Abstract

We report on the non-equilibrium spin noise of a single InGaAs quantum dot charged by a single hole under strong driving by a linearly polarized probe light field. The spectral dependency of the spin noise power evidences a pure homogeneous broadening and negligible charge fluctuation in the environment of the unbiased quantum dot. Full analysis of the spin noise spectra beyond the fluctuation-dissipation theorem yields the heavy-hole spin dynamics as well as the trion spin dynamics. Additionally the experiment reveals a novel, much weaker spin noise contribution observed at the quantum dot resonance showing a significantly longer correlation time. Magnetic-field dependent measurements in combination with theoretical modelling prove that this additional noise contribution unveils a charge reoccupation noise which is intrinsic in naturally charged quantum dots.

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Details

Title
Spin and reoccupation noise beyond the fluctuation-dissipation theorem
Author
Wiegand, J · Smirnov, D. S · Hübner, J · Glazov, M. M · Oestreich, M
Year
2017
Type
Research Article
Language
eng
Comment
11 pages, 7 figures
History
2017-08-03 00:00:00
Categories
Condensed Matter · Mesoscopic Systems and Quantum Hall Effect
This is Version 1 of this record. We added this version on August 5, 2017. This version is based on an original data import from arXiv.org e-Print archive.