Results 41 to 50 of about 630 (239)
Revealing Tripartite Quantum Discord with Tripartite Information Diagram
Entropy, 2017 A new measure based on the tripartite information diagram is proposed for identifying quantum discord in tripartite systems. The proposed measure generalizes the mutual information underlying discord from bipartite to tripartite systems, and utilizes ...
Wei-Ting Lee, Che-Ming Li
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QUANTUM DISCORD AS A RESOURCE IN QUANTUM COMMUNICATION [PDF]
International Journal of Modern Physics B, 2012 As quantum technologies move from the issues of principle to those of practice, it is important to understand the limitations on attaining tangible quantum advantages. In the realm of quantum communication, quantum discord captures the damaging effects of a decoherent environment.
Madhok, V, Datta, A
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Generalizations of quantum discord [PDF]
Journal of Physics A: Mathematical and Theoretical, 2011 The original definition of quantum discord of bipartite states was defined over projective measurements, in this paper we discuss some generalizations of it. These generalizations are defined over general measurements, rank-one general measurements or Neumark extension measurements.
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QUANTUM DISCORD, DECOHERENCE AND QUANTUM PHASE TRANSITION [PDF]
International Journal of Modern Physics B, 2012 Quantum discord is a more general measure of quantum correlations than entanglement and has been proposed as a resource in certain quantum information processing tasks. The computation of discord is mostly confined to two-qubit systems for which an analytical calculational scheme is available.
Bose, Indrani, Pal, Amit Kumar
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Channel discord and distortion
New Journal of Physics, 2021 Discord, originally notable as a signature of bipartite quantum correlation, in fact can be nonzero classically, i.e. arising from noisy measurements by one of the two parties.
Wei-Wei Zhang +2 more
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Entropy, 2021 We propose the first correct special-purpose quantum circuits for preparation of Bell diagonal states (BDS), and implement them on the IBM Quantum computer, characterizing and testing complex aspects of their quantum correlations in the full parameter ...
Elias Riedel Gårding +10 more
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Identification of Unentangled–Entangled Border in the Luttinger Liquid Phase
Crystals, 2019 Quantum discord and entanglement are both criteria for distinguishing quantum correlations in a quantum system. We studied the effect of the transverse magnetic field on the quantum discord of the one-dimensional spin-1/2 XX model.
Somayyeh Nemati +2 more
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IEEE Photonics Journal, 2018 We investigate the decay properties of the quantumness including quantum entanglement, quantum discord, and quantum coherence for two photonic qubits, which are partially entangled in their orbital angular momenta, through Kolmogorov turbulent atmosphere.
Mei-Song Wei +3 more
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A Pedagogical Overview of Quantum Discord [PDF]
Open Systems & Information Dynamics, 2014 Recent measures of nonclassical correlations are motivated by different notions of classicality and operational means. Quantum discord has received a great deal of attention in studies involving quantum computation, metrology, dynamics, many-body physics, and thermodynamics.
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Composite Discordant States and Quantum Darwinism
Entropy, 2022 The framework of Quantum Darwinism strives at characterizing the quantum-to-classical transition by introducing the concept of redundancy of information—as measured by Mutual Information—that a set of observers would acquire on the state of a physical system of interest.
Eoghan Ryan, Mauro Paternostro
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