Elementary Charge Transfer Processes in a Superconductor-Ferromagnet Entangler

Details Elementary Charge Transfer Processes in a Superconductor-Ferromagnet Entangler Elementary Charge Transfer Processes in a Superconductor-Ferromagnet Entangler

2006-12-07

arxiv.org/abs/cond-mat/0612197v2

Europhys. Lett. 81, 40002 (2008)

Physics

Condensed Matter

Superconductivity

5 pages. Rewritten manuscript with 2 new figures. Title changed from v1

Scientific paper

10.1209/0295-5075/81/40002

We study the production of spatially separated entangled electrons in ferromagnetic leads from Cooper pairs in a superconducting lead. We give a complete description of the elementary charge transfer processes, i) transfer of Cooper pairs out of the superconductor by Andreev reflection and ii) distribution of the entangled quasiparticles among the ferromagnetic leads, in terms of their statistics. The probabilities that entangled electrons flow into spatially separated leads are completely determined by experimentally measurable conductances and polarizations. Finally, we investigate how currents, noise and cross correlations are affected by transport of entangled electrons.

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