- Tytuł:
- Entanglement Detection with Non-Ideal Ferromagnetic Detectors
- Autorzy:
-
Rożek, P.
Busz, P.
Kłobus, W.
Tomaszewski, D.
Grudka, A.
Baumgartner, A.
Schönenberger, C.
Martinek, J. - Powiązania:
- https://bibliotekanauki.pl/articles/1386794.pdf
- Data publikacji:
- 2015-02
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
03.67.Mn
03.67.Bg
73.23.-b - Opis:
- 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.
- Źródło:
-
Acta Physica Polonica A; 2015, 127, 2; 493-495
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł