DPG Phi
Verhandlungen
Verhandlungen
DPG

Heidelberg 2015 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

Q: Fachverband Quantenoptik und Photonik

Q 3: Quantum Information: Concepts and Methods I

Q 3.5: Talk

Monday, March 23, 2015, 12:45–13:00, K/HS1

Non-locality in a Bose–Einstein condensate — •Roman Schmied1, Jean-Daniel Bancal2, Baptiste Allard1, Matteo Fadel1, Nicolas Sangouard1, and Philipp Treutlein11Department of Physics, University of Basel, Switzerland — 2Centre for Quantum Technologies, National University of Singapore

By observing non-locality, it is possible to demonstrate that a system cannot be described by a local (classical) theory, even if the underlying local variables are hidden [1]. As a consequence, provably secure randomness can be extracted from any non-local system.

We present a robust experimental technique for detecting non-locality in a two-mode Bose–Einstein condensate. Among a family of Bell inequalities whose violation witnesses non-locality, we maximize the experimental signal-to-noise ratio in the presence of several types of noise. We report on the status of an experiment to detect non-locality in a BEC using this technique.

[1] N. Brunner et al., Rev. Mod. Phys. 86, 419 (2014).

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2015 > Heidelberg