https://doi.org/10.1140/epjd/e2013-30594-7
Regular Article
Characterization of correlations in two-fermion systems based on measurement induced disturbances
1
Instituto Carlos I de Física Teórica y Computacional and
Departamento de Física Atómica Molecular y Nuclear, Universidad de
Granada, 18071
Granada,
Spain
2
Physics Department, University of Pretoria,
0002
Pretoria, South
Africa
3
Universidad Nacional de La Plata UNLP-CREG-CONICET,
C.C. 727, 1900
La Plata,
Argentina
a e-mail: anamajtey@ugr.es
b
e-mail: cz@up.ac.za
b
e-mail: arplastino@ugr.es
Received:
25
September
2012
Received in final form:
31
January
2013
Published online:
30
April
2013
We introduce an approach for the characterization of quantum correlations in two-fermion systems based upon the state disturbances generated by the measurement of “local” observables (that is, quantum observables represented by one-body operators). This approach leads to a concept of quantum correlations in systems of identical fermions different from entanglement.
Key words: Quantum Information
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2013
