Entanglement of Electrons Field-Emitted from a Superconductor

Abstract

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.

5 pages, 3 figures, final version

References in corpus (4)

• Camparison of the Hanbury Brown-Twiss effect for bosons and fermions
• Photon Antibunching in the Photoluminescence Spectra of a Single Carbon Nanotube
• Direct experimental evidence of free fermion antibunching
• Lateral Effects in Fermion Antibunching

Cited by in corpus (2)

• Entanglement spectrum and number fluctuations in the spin-partitioned BCS ground state
• Quantum Coherence of Electrons Field-Emitted from a Superconductor: Correlations and Entanglement