Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 35: Poster 2

Q 35.38: Poster

Mittwoch, 14. März 2012, 16:30–19:00, Poster.I+II

Postselection in simultaneous and weak measurements — •Joachim Fischbach and Matthias Freyberger — Institut für Quantenphysik, Universität Ulm, D-89069 Ulm, Germany

We examine the role of postselection in simultaneous measurements of conjugate variables. Postselection in general is an important element of weak measurements in which the interaction between system and measuring device is weak. In our contribution we present the differences between postselected and non-postselected measurements. In particular, we analyze the corresponding uncertainties. As our setup involves Gaussian states and therefore is analytically solvable for an arbitrary interaction strength, we can explicitly study the transition between ordinary and weak measurements.