Many-body dynamics of exciton creation in a quantum dot by optical absorption: A quantum quench towards Kondo correlations

Hakan E. Türeci, M. Hanl, M. Claassen, A. Weichselbaum, T. Hecht, B. Braunecker, A. Govorov, L. Glazman, A. Imamoglu, J. Von Delft

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Abstract

We study a quantum quench for a semiconductor quantum dot coupled to a Fermionic reservoir, induced by the sudden creation of an exciton via optical absorption. The subsequent emergence of correlations between spin degrees of freedom of dot and reservoir, culminating in the Kondo effect, can be read off from the absorption line shape and understood in terms of the three fixed points of the single-impurity Anderson model. At low temperatures the line shape is dominated by a power-law singularity, with an exponent that depends on gate voltage and, in a universal, asymmetric fashion, on magnetic field, indicative of a tunable Anderson orthogonality catastrophe.

Original languageEnglish (US)
Article number107402
JournalPhysical review letters
Volume106
Issue number10
DOIs
StatePublished - Mar 9 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Türeci, H. E., Hanl, M., Claassen, M., Weichselbaum, A., Hecht, T., Braunecker, B., Govorov, A., Glazman, L., Imamoglu, A., & Von Delft, J. (2011). Many-body dynamics of exciton creation in a quantum dot by optical absorption: A quantum quench towards Kondo correlations. Physical review letters, 106(10), [107402]. https://doi.org/10.1103/PhysRevLett.106.107402