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American Physical Society, Physical review B, 12(89), 2014

DOI: 10.1103/physrevb.89.125404

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Entanglement witnessing and quantum cryptography with nonideal ferromagnetic detectors

Journal article published in 2014 by Waldemar Klobus, Andrzej Grudka, Andreas Baumgartner, Damian Tomaszewski, Christian Schönenberger, Jan Martinek
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This paper is available in a repository.

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Abstract

We investigate theoretically the use of nonideal ferromagnetic contacts as a means to detect quantum entanglement of electron spins in transport experiments. We use a designated entanglement witness and find a minimal spin polarization of eta