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Coulomb scattering in a 2D interacting electron gas and production of EPR pairs.

Authors
Type
Published Article
Journal
Physical review letters
Publication Date
Volume
92
Issue
24
Pages
246803–246803
Identifiers
PMID: 15245120
Source
Medline
License
Unknown

Abstract

We propose a setup to generate nonlocal spin Einstein-Podolsky-Rosen pairs via pair collisions in a 2D interacting electron gas, based on constructive two-particle interference in the spin-singlet channel at the pi/2 scattering angle. We calculate the scattering amplitude via the Bethe-Salpeter equation in the ladder approximation and small r(s) limit and find that the Fermi sea leads to a substantial renormalization of the bare scattering process. From the scattering length, we estimate the current of spin-entangled electrons and show that it is within experimental reach.

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