Extremal quantum correlations: experimental study with two-qubit states
Authors: Chiuri A., Vallone G., Paternostro M., Mataloni P.
Autors Affiliation: Dipartimento di Fisica, Sapienza Universita di Roma, Piazzale Aldo Moro 5, I-00185 Roma, Italy;
Istituto Nazionale di Ottica (INO-CNR), L.go E. Fermi 6, I-50125 Firenze, Italy;
Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Via Panisperna 89/A, Compendio del Viminale, I-00184 Roma, Italy;
Centre for Theoretical Atomic, Molecular, and Optical Physics, School of Mathematics and Physics, Queen’s University, Belfast BT7 1NN, United Kingdom
Abstract: We explore experimentally the space of two-qubit quantum-correlated mixed states, including frontier states as defined by the use of quantum discord and von Neumann entropy. Our experimental setup is flexible enough to allow for 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.
Journal/Review: PHYSICAL REVIEW A
Volume: 84 (2) Pages from: 020304 to: 020304
More Information: We thank V. Rosati for the contributions given in realizing the experiment. MP thanks G. Adesso and D. Girolami for fruitful discussions. This work was supported by the FARI project 2010 of Sapienza Universita di Roma, and the UK EPSRC (EP/G004579/1).DOI: 10.1103/PhysRevA.84.020304Citations: 21data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2020-02-23References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here