Quantum Simulation of Energy Transport with Embedded Rydberg Aggregates, in Phys. Rev. Lett.

In a collaboration with Sebastian Wüster and Alexander Eisfeld (MPIPKS Dresden) we showed that impurities embedded in a Rydberg dressed gas could be used as a quantum simulator for energy transport. Energetic disorder and decoherence introduced by the interaction with the background gas atoms can be controlled by the laser parameters. This allows for an almost ideal realization of a Haken-Reineker-Strobl-type model for energy transport. The transport can be monitored using the same mechanism that provides control over the environment. The degree of decoherence is traced back to information gained on the excitation location through the monitoring, turning the setup into an experimentally accessible model system for studying the effects of quantum measurements on the dynamics of a many-body quantum system.

D. W. Schönleber, A. Eisfeld, M. Genkin, S. Whitlock, S .Wüster, Phys. Rev. Lett. 114, 123005 (2015)