Single-electron entanglement and nonlocality

@article{Dasenbrook2015SingleelectronEA,
  title={Single-electron entanglement and nonlocality},
  author={David Dasenbrook and Joseph Bowles and Jonatan Bohr Brask and Patrick P Hofer and Christian Flindt and Nicolas Brunner},
  journal={New Journal of Physics},
  year={2015},
  volume={18},
  pages={043036}
}
Motivated by recent progress in electron quantum optics, we revisit the question of single-electron entanglement, specifically whether the state of a single electron in a superposition of two separate spatial modes should be considered entangled. We first discuss a gedanken experiment with single-electron sources and detectors, and demonstrate deterministic (i. e. without post-selection) Bell inequality violation. This implies that the single-electron state is indeed entangled and, furthermore… 
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