Entanglement of Electrons Field-Emitted from a Superconductor

Details Entanglement of Electrons Field-Emitted from a Superconductor Entanglement of Electrons Field-Emitted from a Superconductor

2008-10-29

arxiv.org/abs/0810.5245v3

Phys. Rev. B 79 (2009) 180503(R)

Physics

Quantum Physics

5 pages, 3 figures, final version

Scientific paper

10.1103/PhysRevB.79.180503

Under appropriate circumstances the electrons emitted from a superconducting tip can be entangled. We analyze these nonlocal correlations by studying the coincidences of the field-emitted electrons and show that electrons emitted in opposite directions violate Bell's inequality. We scrutinize the interplay between the bosonic nature of Cooper pairs and the fermionic nature of electrons. We further discuss the feasibility of our analysis in the light of present experimental capabilities.

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