Results 41 to 50 of about 613,927 (273)
Quantum correlations for the metric [PDF]
Physical Review D, 2017 We discuss the correlation function for the metric for homogeneous and isotropic cosmologies. The exact propagator equation determines the correlation function as the inverse of the second functional derivative of the quantum effective action. This formulation relates the metric correlation function employed in quantum gravity computations to ...
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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.
Jiajun Ma +5 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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Global Quantum Correlation in the Ising model [PDF]
IJQI Vol. 9, Issues 7&8 (2011) 1685-1699, 2012 We study quantum correlations in an isotropic Ising ring under the effects of a transverse magnetic field. After characterizing the behavior of two-spin quantum correlations, we extend our analysis to global properties of the ring, using a figure of merit for quantum correlations that shows enough sensitivity to reveal the drastic changes in the ...
arxiv +1 more source
Verifying the Quantumness of Bipartite Correlations [PDF]
Physical Review Letters, 2016 Entanglement is at the heart of most quantum information tasks, and therefore considerable effort has been made to find methods of deciding the entanglement content of a given bipartite quantum state. Here, we prove a fundamental limitation to deciding if an unknown state is entangled or not: we show that any quantum measurement which can answer this ...
Carmeli, Claudio +4 more
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Discriminating quantum correlations with networking quantum teleportation
Physical Review Research, 2020 The Bell inequality, and its substantial experimental violation, offers a seminal paradigm for showing that the world is not in fact locally realistic.
Shih-Hsuan Chen +5 more
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Hybrid no-signaling-quantum correlations
New Journal of Physics, 2022 Fundamental investigations in non-locality have shown that while the no-signaling principle alone is not sufficient to single out the set of quantum non-local correlations, local quantum mechanics and no-signaling together exactly reproduce the set of ...
Michał Banacki +3 more
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Quantum Correlations Induced by Local von Neumann Measurement [PDF]
Int J Theor Phys, 52, 2379 (2013), 2013 We study the total quantum correlation, semiquantum correlation and joint quantum correlation induced by local von Neumann measurement in bipartite system.We analyze the properties of these quantum correlations and obtain analytical formula for pure states. The experimental witness for these quantum correlations is further provided and the significance
arxiv +1 more source
The power of qutrits for non-adaptive measurement-based quantum computing
New Journal of Physics, 2023 Non-locality is not only one of the most prominent quantum features but can also serve as a resource for various information-theoretical tasks. Analysing it from an information-theoretical perspective has linked it to applications such as non-adaptive ...
Jelena Mackeprang +3 more
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Quantum Otto engine with quantum correlations
Physical Review A, 2023 We theoretically prose and investigate a photo-Otto engine that is working with a single-mode radiation field inside an optical cavity and alternatively driven by a hot and a cold reservoir, where the hot reservoir is realized by sending one of a pair of correlated two-level atoms to pass through the optical cavity, and the cold one is made of a ...
Yang Xiao +5 more
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