منابع مشابه
Dimension witnesses and quantum state discrimination.
Dimension witnesses allow one to test the dimension of an unknown physical system in a device-independent manner, that is, without placing assumptions about the functioning of the devices used in the experiment. Here we present simple and general dimension witnesses for quantum systems of arbitrary Hilbert space dimension. Our approach is deeply connected to the problem of quantum state discrim...
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Catherine Hughes,1 Marco G. Genoni,2,1 Tommaso Tufarelli,1 Matteo G. A. Paris,3 and M. S. Kim1,4 1QOLS, Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom 2Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom 3Dipartimento di Fisica, Università degli Studi di Milano, I-20133 Milano, Italy 4School of Computational S...
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In consistent history quantum theory, a description of the time development of a quantum system requires choosing a framework or consistent family, and then calculating probabilities for the different histories which it contains. It is argued that the framework is chosen by the physicist constructing a description of a quantum system on the basis of questions he wishes to address, in a manner a...
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We study the separability of symmetric bipartite quantum states and show that a single correlation measurement is sufficient to detect the entanglement of any bipartite symmetric state with a non-positive partial transpose. We also discuss entanglement conditions and entanglement witnesses for states with a positive partial transpose.
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The problem of demonstrating entanglement is central to quantum information processing applications. Resorting to standard entanglement witnesses requires one to perfectly trust the implementation of the measurements to be performed on the entangled state, which may be an unjustified assumption. Inspired by the recent work of F. Buscemi [Phys. Rev. Lett. 108, 200401 (2012)], we introduce the co...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2019
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.122.130402