How to observe and quantify quantum-discord states via correlations
نویسندگان
چکیده
منابع مشابه
Quantum discord of states arising from graphs
Quantum discord refers to an important aspect of quantum correlations for bipartite quantum systems. In our earlier works we have shown that corresponding to every graph (combinatorial) there are quantum states whose properties are reflected in the structure of the corresponding graph. Here, we attempt to develop a graph theoretic study of quantum discord that corresponds to a necessary and suf...
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Quantum state of composite system contains both classical and quantum correlation. Usually by quantum correlations one means quantum entanglement which provides an essential resource for quantum information processing such as quantum cryptography, dense coding, quantum computing [1, 2]. However, a quantum state of a composed system may contain other types of nonclassical correlation even if it ...
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Mazhar Ali,1,3,* A. R. P. Rau,2 and G. Alber1 1Institut für Angewandte Physik, Technische Universität Darmstadt, Darmstadt D-64289, Germany 2Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA 3Department of Electrical Engineering, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan (Received 18 February 2010; published 12 April...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2019
ISSN: 2469-9926,2469-9934
DOI: 10.1103/physreva.100.022321