Unitary limit in crossed Andreev transport
Mesoscale and Nanoscale Physics
2015-10-12 v3 Superconductivity
Quantum Physics
Abstract
One of the most promising approaches of generating spin- and energy-entangled electron pairs is splitting a Cooper pair into the metal through spatially separated terminals. Utilizing hybrid systems with the energy-dependent barriers at the superconductor-normal metal interfaces, one can achieve practically 100% efficiency outcome of entangled electrons. We investigate minimalistic one-dimensional model comprising a superconductor and two metallic leads and derive an expression for an electron-to-hole transmission probability as a measure of splitting efficiency. We find the conditions for achieving 100% efficiency and present analytical results for the differential conductance and differential noise.
Keywords
Cite
@article{arxiv.1412.8145,
title = {Unitary limit in crossed Andreev transport},
author = {I. A. Sadovskyy and G. B. Lesovik and V. M. Vinokur},
journal= {arXiv preprint arXiv:1412.8145},
year = {2015}
}
Comments
8 pages, 6 figures; minor corrections