Dear All,
You are cordially invited for the next Solid State Physics Seminar:
25. Nov. 2010, 16:45h, HPF G 6
Speaker:
Prof. Wolfgang Belzig, Theoretische Festkörperphysik, Universität Konstanz
Title
"Quantum paradoxes in electronic full counting statistics"
Abstract:
The impossibility of measuring non-commuting quantum mechanical observables is one of the most fascinating consequences of the quantum mechanical postulates. Hence, to date the investigation of quantum measurement and projection is a fundamentally interesting topic. We propose to test the concept of weak measurement of non-commuting observables in mesoscopic transport experiments, using a quasiprobablistic description. As first example of a paradox, we derive an inequality for current correlators, which is satisfied by every classical probability but violated by high-frequency fourth-order cumulants in the quantum regime for experimentally feasible parameters. Further paradoxes can be used to detect nonlocal quantum correlations (entanglement) in mesoscopic junctions far beyond the regime covered by the usual Bell inequalities.
(Host: A. Wallraff)
Kind regards