INVESTIGADORES
IEMMI Claudio Cesar
artículos
Título:
Conditional purity and quantum correlation measures in two qubit mixed states
Autor/es:
REBÓN, L; ROSSIGNOLI, R; VARGA, J J M; GIGENA, N; CANOSA, N; IEMMI, C; LEDESMA, S
Revista:
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Editorial:
IOP PUBLISHING LTD
Referencias:
Año: 2016 vol. 49
ISSN:
0953-4075
Resumen:
We analyze and show experimental results of the conditional purity, the quantum discord andother related measures of quantum correlation in mixed two-qubit states constructed from a pairof photons in identical polarization states. The considered states are relevant for the descriptionof spin pair states in interacting spin chains in a transverse magnetic field. We derive cleananalytical expressions for the conditional local purity and other correlation measures obtained asa result of a remote local projective measurement, which are fully verified by the experimentalresults. A simple exact expression for the quantum discord of these states in terms of themaximum conditional purity is also derived.
