Hannover 2013 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 46: Quantum information: Concepts and methods IV

Q 46.7: Vortrag

Donnerstag, 21. März 2013, 12:30–12:45, E 001

Quantum phase space and its entropies — •Kedar S. Ranade — Institut für Quantenphysik, Universität Ulm

Quantum phase space functions are known to be an alternative representation of quantum mechanics, which in some sense appears to be more “classical” than the usual Hilbert space formalism with density matrices and operators. Similar to the concept of Shannon and von-Neumann entropies on probability distributions or density matrices, the Wehrl and Rényi-Wehrl entropies make use of the so-called Husimi-Kano phase space function. Certain analogues of these functions exist for the Wigner function. In this talk we give an overview on these concepts and their interpretation and discuss how relations between different phase space functions may be exploited to give new insights.