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.
|Physical Review B - Condensed Matter and Materials Physics
|Published - 2009 May 1
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics