Extremal quantum correlations: Experimental study with two-qubit states

Authors :: Giuseppe Vallone
Andrea Chiuri
Paolo Mataloni
Mauro Paternostro
Source :: Physical review. A 84 (2011): 020304–020304. doi:10.1103/PhysRevA.84.020304, info:cnr-pdr/source/autori:Chiuri A. [ 1, 2 ] ; Vallone G. [ 1, 3, 4 ] ; Paternostro M. [ 5 ] ; Mataloni P. [ 1, 2 ]/titolo:Extremal quantum correlations: experimental study with two-qubit states/doi:10.1103%2FPhysRevA.84.020304/rivista:Physical review. A/anno:2011/pagina_da:020304/pagina_a:020304/intervallo_pagine:020304–020304/volume:84
Publication Year :: 2011
Publisher :: American Physical Society (APS), 2011.
Abstract: We explore experimentally the space of two-qubit quantum correlated mixed states, including frontier ones as defined by the use of quantum discord and von Neumann entropy. Our experimental setup is flexible enough to allow for the high-quality generation of a vast variety of states. We address quantitatively the relation between quantum discord and a recently suggested alternative measure of quantum correlations.<br />5 pages, 2 figures