Romito, Alessandro and Gefen, Yuval (2017) Ubiquitous Nonlocal Entanglement with Majorana Zero Modes. Physical review letters, 119 (157702). ISSN 1079-7114
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Abstract
Entanglement in quantum mechanics contradicts local realism, and is a manifestation of quantum non-locality. Its presence can be detected through the violation of Bell, or CHSH inequalities. Paradigmatic quantum systems provide examples of both, non-entangled and entangled states. Here we consider a minimal complexity setup consisting of 6 Majorana bound states. We find that any allowed state in the degenerate Majorana space is non-locally entangled. We show how to measure (with available techniques) the CHSH-violating correlations, using either intermediate strength or weak measurement protocols.