Hamburg 2009 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 30: Poster II

Q 30.28: Poster

Tuesday, March 3, 2009, 16:30–19:00, VMP 9 Poster

Nonlocal realistic theories and continuous quantum systems — •Anna Hauber und Matthias Freyberger — Institut für Quantenphysik, Universität Ulm, D-89069 Ulm, Germany

Recently [1], a certain class of non-local, realistic theories (NLRT) has been formulated for two-particle systems with dichotomic observables and has been shown to be incompatible with quantum mechanics and with experimental data [2,3]. The proof uses inequalities for correlation functions, as in the original Bell case. We study how to expand the formulation to systems with continuous variables and demonstrate how such systems can violate the predictions of the NLRT. Moreover, we analyze how violations of the NLRT-inequalities are related to violations of Bell-type inequalities.
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S. Gröblacher et al., Nature 446 (2007), 871
C. Branciard et al., Phys. Rev. Lett. 99 (2007), 210407