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arXiv · 1006.4991

Proposal for a cumulant-based Bell test for mesoscopic junctions

Adam Bednorz·Wolfgang Belzig
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Abstract

The creation and detection of entanglement in solid state electronics is of fundamental importance for quantum information processing. We prove that second-order quantum correlations can be always interpreted classically and propose a general test of entanglement based on the violation of a classically derived inequality for continuous variables by fourth-order quantum correlation functions. Our scheme provides a way to prove the existence of entanglement in a mesoscopic transport setup by measuring higher order cumulants without requiring the additional assumption of a single charge detection

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Adam Bednorz, Wolfgang Belzig. 2011-03-20. Proposal for a cumulant-based Bell test for mesoscopic junctions. https://doi.org/10.1103/physrevb.83.125304

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