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DY: Fachverband Dynamik und Statistische Physik

DY 27: Statistical Physics II

DY 27.5: Vortrag

Dienstag, 17. März 2020, 11:00–11:15, ZEU 118

Universality of photon counting below a bifurcation threshold — •Lisa Arndt and Fabian Hassler — JARA-Institute for Quantum Information, RWTH Aachen University, D-52056 Aachen, Germany

At a bifurcation point, a small change of a system’s parameter causes a qualitative change in the dynamics of the system. This behavior can, for example, be observed in a parametrically driven system or in a laser. In both systems, the driving strength needs to exceed a threshold before classical radiation is produced. We study the photon counting statistics below the instability threshold, where quantum fluctuations enable the emission of photons. Close to the bifurcation point, these fluctuations are determined by the instability threshold. Here, we focus on one-dimensional bifurcations and provide deeper insight into the universal behavior of the photon counting statistics in different physical systems.