Erlangen 2022 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 24: Quantum Effects

Q 24.8: Poster

Dienstag, 15. März 2022, 16:30–18:30, P

Time-Dependent Photon Counting Statistics Emitted from a Chiral Atom Chain — •Tom von Scheven, Igor Lesanovsky, and Beatriz Olmos — Institut für Theoretische Physik, Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany

We study the steady state of a laser-driven chain of two-level atoms coupled to a chiral waveguide [1]. Depending on the distance between the atoms and the laser detuning this state may be either a dark state or a mixture of a dark and a bright state. Here, we investigate the dynamical evolution of this system towards stationarity.

To do so, we introduce an imaginary counting field to the master equation that governs the dynamics of the system under consideration. This gives us access to the dynamics of not only the average photon count rate but rather the full counting statistics of the photon emission into the waveguide.

We show that, even though two systems may converge to different stationary states, their probability distributions evolve in an almost indistinguishable way for very long times.

Our results demonstrate the potential of the use of imaginary counting fields for the unravelling of the dynamics of quantum optical many-body systems.

[1] G. Buonaiuto et al., New J. Phys. 21, 113021 (2019)