Ubiquitous non-local entanglement with Majorana bound states

Alessandro Romito; Yuval Gefen

doi:10.1103/PhysRevLett.119.157702

Ubiquitous non-local entanglement with Majorana bound states

Mesoscale and Nanoscale Physics 2017-10-25 v3 Strongly Correlated Electrons Quantum Physics

Authors: Alessandro Romito , Yuval Gefen

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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.

Keywords

Majorana bound states non-local entanglement CHSH inequality quantum non-locality weak measurement

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@article{arxiv.1703.01841,
  title  = {Ubiquitous non-local entanglement with Majorana bound states},
  author = {Alessandro Romito and Yuval Gefen},
  journal= {arXiv preprint arXiv:1703.01841},
  year   = {2017}
}

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published version, supplementary material included, 2 figures

Ubiquitous non-local entanglement with Majorana bound states

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