Dresden 2014 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 33: Optical properties I

HL 33.4: Vortrag

Dienstag, 1. April 2014, 10:15–10:30, POT 006

Quantum-spectroscopy studies on semiconductor quantum wells — •Martin Mootz1, Mackillo Kira1, Stephan W. Koch1, Andrew E. Hunter2,3, Hebin Li2, and Steven T. Cundiff2,31Department of Physics, Philipps-University Marburg, Renthof 5, D-35032 Marburg, Germany — 2JILA, University of Colorado and National Institute of Standards and Technology, Boulder, CO 80309-0440, USA — 3Department of Physics, University of Colorado, Boulder, CO 80309-0390, USA

Quantum-optical generalization of laser spectroscopy can characterize many-body states that remain hidden if only classical features of light are applied [1]. We apply quantum-optical spectroscopy by projecting GaAs quantum-well measurements into quantum-optical absorption to light sources with a nonclassical quantum statistics. Our results demonstrate that the quantum-well absorption depends critically on the quantum statistics of the light source. In particular, we find that quantum-optical spectroscopy characterizes the properties of many-body states — ranging from biexcitons to highly correlated electron–hole complexes — with a much higher accuracy than classical spectroscopy does. We also present a general theory [2] that can be applied to compute the energetics of the observed highly correlated many-body states.
M. Kira, S.W. Koch, R.P. Smith, A.E. Hunter, and S.T. Cundiff, Nature Phys. 7, 799-804 (2011).
M. Mootz, M. Kira, and S.W. Koch, New J. Phys., 15, 093040 (2013).

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