Quantum coherence of electrons field-emitted from a superconductor: Correlations and entanglement

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3 Citations (Scopus)

Abstract

The correlations of the electrons field-emitted from a superconductor are fully analyzed, both in space and time. It is proposed that a coincidence experiment would reveal a positive correlation between the electrons emitted in opposite directions. The electrons can be entangled and can even violate Bell's inequality. The crucial role played by Andreev's process is scrutinized, analytical formulas are derived for the correlations, and the physics behind the phenomenon is clarified.

Original languageEnglish
Article number104516
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume80
Issue number10
DOIs
Publication statusPublished - 2009 Sep 29

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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