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2015 | 127 | 2 | 493-495
Article title

Entanglement Detection with Non-Ideal Ferromagnetic Detectors

Content
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EN
Abstracts
EN
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.
Keywords
EN
Year
Volume
127
Issue
2
Pages
493-495
Physical description
Dates
published
2015-02
References
  • [1] A. Aspect, P. Grangier, P. Gérard, R. Gérard, Phys. Rev. Lett. 47, 460 (1981), doi: 10.1103/PhysRevLett.47.460
  • [2] M. Horodecki, P. Horodecki, R. Horodecki, Phys. Lett. A 223, 1 (1996), doi: 10.1016/S0375-9601(96)00706-2
  • [3] M. Horodecki, P. Horodecki, R. Horodecki, Phys. Lett. A 200, 1 (1995), doi: 10.1016/0375-9601(95)00214-N
  • [4] J. Eldridge, M.G. Pala, M. Governale, J. König, Phys. Rev. B. 82, 184507 (2010), doi: 10.1103/PhysRevB.82.184507
  • [5] W. Kłobus, A. Grudka, A. Baumgartner, D. Tomaszewski, C. Schönenberger, J. Martinek, Phys. Rev. B. 89, 125404 (2014), doi: 10.1103/PhysRevB.89.125404
  • [6] A. Acin, J. Bae, E. Bagan, M. Baig, Ll. Masanes, R. Munoz-Tapia Phys. Rev. A 73, 012327 (2006), doi: 10.1103/PhysRevA.73.012327
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv127n2108kz
Identifiers
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