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

Kazuya Yuasa

doi:10.1103/PhysRevB.80.104516

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

Kazuya Yuasa

School of Advanced Science and Engineering

Research output: Contribution to journal › Article

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 language	English
Article number	104516
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	80
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.80.104516
Publication status	Published - 2009 Sep 29

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Yuasa, K. (2009). Quantum coherence of electrons field-emitted from a superconductor: Correlations and entanglement. Physical Review B - Condensed Matter and Materials Physics, 80(10), [104516]. https://doi.org/10.1103/PhysRevB.80.104516

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