Results 31 to 40 of about 613,927 (273)
Certification and applications of quantum nonlocal correlations
JPhys Photonics, 2023 Entanglement and Einstein–Podolsky–Rosen (EPR) steering are nonlocal quantum correlations, which are relevant resources for quantum information protocols. EPR steering, or quantum steering, refers to the correlation where a party might ‘steer’, or modify,
A Elena Piceno-Martínez +2 more
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Temperature Correlations of Quantum Spins [PDF]
Physical Review Letters, 1993 We consider isotropic XY model in the transverse magnetic field on the one dimensional lattice. Another name of the model in Heisenberg XXO model of spin 1/2.We solved long standing problem of evaluation of temperature correlations. We first represent correlation function in the model, by means of completely integrable differential equation.
Nikita Andreevich Slavnov +3 more
openaire +6 more sources
Spin chain overlaps and the twisted Yangian
Journal of High Energy Physics, 2020 Using considerations based on the thermodynamical Bethe ansatz as well as the representation theory of twisted Yangians we derive an exact expression for the overlaps between the Bethe eigenstates of the SO(6) spin chain and matrix product states built ...
Marius de Leeuw +4 more
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Equilibrium and nonequilibrium quantum correlations between two detectors in curved spacetime
European Physical Journal C: Particles and Fields, 2022 We investigate the equilibrium and nonequilibrium quantum information correlations encoded in a two-qubit system in curved spacetime near the horizon of a Kerr black hole.
He Wang, Jin Wang
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Correlations for computation and computation for correlations
npj Quantum Information, 2021 Quantum correlations are central to the foundations of quantum physics and form the basis of quantum technologies. Here, our goal is to connect quantum correlations and computation: using quantum correlations as a resource for computation—and vice versa,
Bülent Demirel +4 more
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Analytical Expression of Quantum Discord for Rank-2 Two-qubit States [PDF]
Quantum Information Processing(2018) 17:234, 2018 Quantum correlations characterized by quantum entanglement and quantum discord play important roles in many quantum information processing. We study the relations among the entanglement of formation, concurrence, tangle, linear entropy based classical correlation and von Neumann entropy based classical correlation.
arxiv +1 more source
Quantum correlations with no causal order [PDF]
Nature Communications, 2012 The idea that events obey a definite causal order is deeply rooted in our understanding of the world and at the basis of the very notion of time. But where does causal order come from, and is it a necessary property of nature? We address these questions from the standpoint of quantum mechanics in a new framework for multipartite correlations which does
Ognyan Oreshkov +3 more
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Entanglement in prepare-and-measure scenarios: many questions, a few answers
New Journal of Physics, 2022 Entanglement and quantum communication are paradigmatic resources in quantum information science leading to correlations between systems that have no classical analogue.
Jef Pauwels +3 more
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Fully nonlocal quantum correlations [PDF]
Physical Review A, 2012 Quantum mechanics is a nonlocal theory, but not as nonlocal as the no-signalling principle allows. However, there exist quantum correlations that exhibit maximal nonlocality: they are as nonlocal as any non-signalling correlations and thus have a local content, quantified by the fraction $p_L$ of events admitting a local description, equal to zero ...
Andrea Chiuri +7 more
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Spatial Entanglement of Fermions in One-Dimensional Quantum Dots
Entropy, 2021 The time-dependent quantum Monte Carlo method for fermions is introduced and applied in the calculation of the entanglement of electrons in one-dimensional quantum dots with several spin-polarized and spin-compensated electron configurations.
Ivan P. Christov
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