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Q: Fachverband Quantenoptik und Photonik

Q 35: Poster I

Q 35.6: Poster

Tuesday, March 19, 2013, 16:00–18:30, Empore Lichthof

Pointer-based measurements of conjugate observables in a thermal environment — •Raoul Heese and Matthias Freyberger — Institut für Quantenphysik, Universität Ulm, D-89069 Ulm, Germany

Arthurs and Kelly's simultaneous measurements of conjugate observables involve two pointer systems which are coupled to a quantum system to be measured. This coupling leads to generalized versions of uncertainty relations. A more realistic treatment of this model has to take environmental effects into consideration which further disturb the measurement process. We therefore treat the pointer systems as particles under Brownian motion in a thermal bath. This approach will allow us to discuss damping and decoherence of quantum measurements.