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Q: Fachverband Quantenoptik und Photonik

Q 16: Poster: Quantum information, micromechanical oscillators, matter wave optics, precision measurements and metrology

Q 16.7: Poster

Montag, 17. März 2014, 16:30–18:30, Spree-Palais

Stochastics in System-Environment Correlation Dynamics — •Franziska Peter and Walter Strunz — Institut für Theoretische Physik, Technische Universität Dresden, Germany

Considering small open quantum systems linearly coupled to a bosonic heat bath, we investigate the nature of system-environment correlations of these bipartite quantum systems at finite temperature. We thereby forge ahead into a wide area of decoherence processes, as in the limit of weak coupling the interaction with any environment can be mapped onto this model.

Taking advantage of some utile properties of the Glauber-Sudarshan Partial-P function, we were able to prove that e.g. a harmonic oscillator with zero initial correlation never entangles with its environment (which might suggest that in general there is no entanglement possible in the Lindblad regime) but in contrast, there are other systems with most interesting time and temperature dependence of separability and entanglement, which now is being further investigated using Itô-calculus.