Results 71 to 80 of about 5,417,762 (253)
Quantum correlations and ergotropy
Physical Review E, 2022 Understanding the role of classical and quantum correlations in work extraction is a problem of fundamental importance in thermodynamics. We approach this problem by considering that, in closed quantum systems, the maximum cyclic work extractable is equal to the ergotropy.
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Bounding quantum correlations with indefinite causal order
New Journal of Physics, 2015 Causal inequalities are bounds on correlations obtained when operations take place in a causal sequence, i.e. in which the background time or definite causal structure pre-exists such that every operation is either in the future, in the past or space ...
Časlav Brukner
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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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Quantum correlations and thermodynamic performances of two-qubit engines with local and common baths [PDF]
Physical Review A, 2018 We investigate heat engines whose working substance is made of two coupled qubits performing a generalised Otto cycle by varying their applied magnetic field or their interaction strength during the compression and expansion strokes.
A. Hewgill, A. Ferraro, G. Chiara
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Quantum Walks of Correlated Photons [PDF]
Science, 2010 A Correlated Quantum Walk Random walks are powerful tools for modeling statistical events. The analogous quantum walk involves particles tunneling between available sites. Peruzzo et al. (p. 1500 ; see the Perspective by
Peruzzo A. +13 more
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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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Converting Coherence to Quantum Correlations [PDF]
Physical Review Letters, 2016 Recent results in quantum information theory characterize quantum coherence in the context of resource theories. Here we study the relation between quantum coherence and quantum discord, a kind of quantum correlation which appears even in non-entangled states.
Ma J. +4 more
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Beating one bit of communication with and without quantum pseudo-telepathy
npj Quantum InformationAccording to Bell’s theorem, certain entangled states cannot be simulated classically using local hidden variables (LHV). Suppose that we can augment LHV by some amount of classical communication.
István Márton +3 more
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Simulating extremal temporal correlations
New Journal of Physics, 2020 The correlations arising from sequential measurements on a single quantum system form a polytope. This is defined by the arrow-of-time (AoT) constraints, meaning that future choices of measurement settings cannot influence past outcomes.
Cornelia Spee +2 more
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Probing the non-classicality of temporal correlations [PDF]
Quantum, 2017 Correlations between spacelike separated measurements on entangled quantum systems are stronger than any classical correlations and are at the heart of numerous quantum technologies.
Martin Ringbauer, Rafael Chaves
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