Results 31 to 40 of about 1,306,706 (295)
Dynamics of quantum discord of two coupled spin-1/2’s subjected to time-dependent magnetic fields [PDF]
Results in Physics, 2019 We describe the dynamics of quantum discord of two interacting spin-1/2’s subjected to controllable time-dependent magnetic fields. The exact time evolution of discord is given for various input mixed states consisting of classical mixtures of two Bell ...
Roberto Grimaudo +4 more
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Results in PhysicsQuantum discord goes beyond entanglement and exists in a wide range of quantum states that may be separable, playing a crucial role in quantum information tasks.
Yiding Wang +2 more
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The power of one clean qubit in supervised machine learning [PDF]
Scientific Reports, 2023 This paper explores the potential benefits of quantum coherence and quantum discord in the non-universal quantum computing model called deterministic quantum computing with one qubit (DQC1) in supervised machine learning.
Mahsa Karimi +3 more
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Composite Discordant States and Quantum Darwinism. [PDF]
Entropy (Basel), 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.
Ryan E, Paternostro M.
europepmc +7 more sources
Quantum Discord Cannot Be Shared
Physical Review Letters, 2013 5 pages, 3 ...
Alexander Streltsov, Wojciech H. Zurek
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Sharma–Mittal quantum discord [PDF]
Quantum Information Processing, 2018 We demonstrate a generalization of quantum discord using a generalized definition of von-Neumann entropy, which is Sharma–Mittal entropy; and the new definition of discord is called Sharma–Mittal quantum discord.
Souma Mazumdar, Supriyo Dutta, P. Guha
semanticscholar +5 more sources
Scales of Time Where the Quantum Discord Allows an Efficient Execution of the DQC1 Algorithm [PDF]
Advances in Mathematical Physics, 2014 The power of one qubit deterministic quantum processor (DQC1) (Knill and Laflamme (1998)) generates a nonclassical correlation known as quantum discord.
M. Ávila, G. H. Sun, A. L. Salas-Brito
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Interpreting quantum discord in quantum metrology [PDF]
Journal of Physics: Conference Series, 2015 Multipartite quantum systems show properties which do not admit a classical explanation. In particular, even nonentangled states can enjoy a kind of quantum correlations called quantum discord. I discuss some recent results on the role of quantum discord in metrology. Given an interferometric phase estimation protocol where the Hamiltonian is initially
Girolami, Davide
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Quantum features of gravcats [PDF]
Scientific ReportsWe explore the quantum features of two gravitational cats (gravcats) modeled by two qubits, focusing on quantum steerability, concurrence, and geometric quantum discord under varying conditions of gravitational interaction strength, temperature, and ...
Elhabib Jaloum +2 more
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Quantum correlated heat engine in XY chain with Dzyaloshinskii–Moriya interactions [PDF]
Scientific Reports, 2022 In this paper, we consider a heat engines composed of two interactional qubits with spin-orbit interaction (Dzyaloshinskii–Moriya (DM)) subject to an external magnetic field, so that each qubit is coupled with cold or hot source.
M. Asadian, S. Ahadpour, F. Mirmasoudi
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