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arXiv · 1305.7061

Entanglement witnessing in superconducting beamsplitters

H. Soller·L. Hofstetter·D. Reeb
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Abstract

We analyse a large class of superconducting beamsplitters for which the Bell parameter (CHSH violation) is a simple function of the spin detector efficiency. For these superconducting beamsplitters all necessary information to compute the Bell parameter can be obtained in Y-junction setups for the beamsplitter. Using the Bell parameter as an entanglement witness, we propose an experiment which allows to verify the presence of entanglement in Cooper pair splitters.

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H. Soller, L. Hofstetter, D. Reeb. 2013-05-30. Entanglement witnessing in superconducting beamsplitters. https://doi.org/10.1209/0295-5075%2F102%2F50009

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