Open Quantum Systems’ Decay across Time

Decay rates and survival probabilities in open quantum systems.

We provide the first statistical analysis of the decay rates of strongly driven 3D atomic Rydberg states. The distribution of the rates exhibits universal features due to Anderson localization, while universality of the time dependent decay requires particular initial conditions.

Semiclassical mechanism for the quantum decay in open chaotic systems.

We address the decay in open chaotic quantum systems and calculate semiclassical corrections to the classical exponential decay. We confirm random matrix predictions and, going beyond, calculate Ehrenfest time effects. To support our results we perform extensive numerical simulations. Within our approach we show that certain (previously unnoticed) pairs of interfering, correlated classical traj...

Controversy about Quantum Time Decay

open quantum systems

Quantum mechanics must be regarded as open systems. On one hand, this is due to the fact that, like in classical physics, any realistic system is subjected to a coupling to an uncontrollable environment which influences it in a non-negligible way. The theory of open quantum systems thus play a major role in many applications of quantum physics since perfect isolation of quantum system is not po...

Time-dependent approach to electron pumping in open quantum systems

G. Stefanucci,1,2,* S. Kurth,1,2 A. Rubio,2,3 and E. K. U. Gross1,2 1Institut für Theoretische Physik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany 2European Theoretical Spectroscopy Facility (ETSF), Departamento de Física de Materiales, Universidad del País Vasco, Edificio Korta, 20018 San Sebastian, Spain 3Departamento de Física de Materiales, Facultad de Ciencias Químicas...