Entanglement Detection with Non-Ideal Ferromagnetic Detectors

Rozek, P. and Busz, P. and Klobus, W. and Tomaszewski, D. and Grudka, A. and Baumgartner, A. and Schönenberger, C. and Martinek, J.. (2015) Entanglement Detection with Non-Ideal Ferromagnetic Detectors. Acta Physica Polonica A, 127 (2). pp. 493-495.

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Official URL: http://edoc.unibas.ch/41347/

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Entangled states are essential in basics quantum communication protocols and quantum cryptography. Ferromagnetic contacts can work as a spin detector, giving possibility of converting information about electron spin to the electric charge, and therefore, detection of entangled states with the electric current measurements is possible. Method of confirming entanglement with non-ideal detectors is presented, the impact of decoherence and noise on states and quality of entanglement is discussed. Entanglement witness (EW) operator method is compared with the CHSH inequalities approach. Required spin polarization for the EW is lower than for the CHSH inequalities. System with asymmetric spin polarizations of detectors was analyzed, including the CHSH inequalities and the EW method.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimentalphysik Nanoelektronik (Schönenberger)
UniBasel Contributors:Baumgartner, Andreas and Schönenberger, Christian
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Polish Acad Sciences Inst Physics
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:30 Jun 2016 11:02
Deposited On:17 May 2016 07:30

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