Charge transfer statistics and entanglement in normal-quantum dot-superconductor hybrid structures
Abstract
We analyze the full counting statistics (FCS) of a single-site quantum dot coupled to multiple metallic electrodes in the normal state and a superconductor for arbitrary transmission. We present an analytical solution of the problem taking into account the full energy dependence of the transmission coefficient. We identify two transport processes as sources of entanglement between the current carriers by observing positive cross current correlations. Furthermore, we consider ferromagnetic electrodes and show how they can be used as detectors in experiments violating the Bell-Clauser-Horne-Shimony-Holt inequality.
- Publication:
-
European Physical Journal D
- Pub Date:
- June 2011
- DOI:
- 10.1140/epjd/e2010-00256-7
- arXiv:
- arXiv:1010.1137
- Bibcode:
- 2011EPJD...63....3S
- Keywords:
-
- Cooper Pair;
- Charge Transfer Statistic;
- Cumulant Generate Function;
- Resonant Level;
- Ferromagnetic Electrode;
- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- 6 pages, 3 figures, typos fixed, references added