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Q: Fachverband Quantenoptik und Photonik

Q 41: Poster: Quantum Optics and Photonics II

Q 41.5: Poster

Wednesday, March 13, 2019, 16:15–18:15, S Fobau Physik

Violation of Bell inequalities with discretized continuous variables — •Alexander Sauer, Zsolt Bernad, and Gernot Alber — Institut für Angewandte Physik, Technische Universität Darmstadt

Bell tests are a crucial part of many key distribution protocols in quantum cryptography. As their implementation is highly demanding on the experimental setups, less demanding continuous variable protocols have been proposed. It has been shown that photodetection and homodyne measurements can be discretized to achieve violations of a Bell inequality [1]. We further investigate the maximally possible violations by this discretization for multipartite scenarios, also taking into account device imperfections.

[1] M. T. Quintino, M. Araujo, D. Cavalcanti, M. F. Santos and M. T. Cunha, J. Phys. A: Math. Theor. 45, 215308 (2012)