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HL: Fachverband Halbleiterphysik

HL 18: Quantum dots and wires I

HL 18.3: Vortrag

Montag, 16. März 2020, 15:45–16:00, POT 151

Non-Markovianity in quantum optical signals: Wigner time delay and anomalous population trapping — •Alexander Carmele^1,3, Stephan Reitzenstein², and Scott Parkins³ — ¹Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin — ²Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin — ³Department of Physics, University of Auckland, Private Bag 92019, Auckland, New Zealand

In comparison to fundamental atom-photon interfaces, a key factor to the understanding of observed phenomena in semiconductor quantum electrodynamics is the presence of a structured environment. This system-reservoir interaction induces intrinsically non-Markovian dynamics [1]. For example, the Wigner delay of QD light emission is limited not only by twice the radiative lifetime as in the case for isolated atoms but also by the phonon-scattering induced decoherence time to approximately the lifetime of the exciton [2]. Another example is anomalous population trapping in multiple-emitter and multiple-excitation waveguide-QED systems. We show that the Markovian treatment does not capture population trapping dynamics even if local phase differences in the light-matter coupling elements are allowed [3].

1 A. Carmele and S. Reitzenstein, Nanophotonics 8, 655 (2019).
2 M. Strauß et al, Phys. Rev. Lett 122, 107401 (2019).
3 A. Carmele et al, arXiv:1910.13414 (2019).