Results 51 to 60 of about 613,927 (273)
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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Simulating quantum measurements and quantum correlations
, 2023 This PhD thesis is focused on the quantum measurement simulability problem, that is, deciding whether a given measurement can be simulated when only a restricted subset of measurements is accessible. We provide an operational framework for this problem based on classical manipulations over the set of simulators. Particular cases of interest are further
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Quantum correlation via quantum coherence [PDF]
Quantum Information Processing, 2014 20 pages, 1 figure. To appear Quant.
Chang-shui Yu, Haiqing Zhao, Yang Zhang
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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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Interplays between classical and quantum entanglement-assisted communication scenarios
New Journal of Physics, 2023 Prepare-and-measure scenarios ( pm ), in their many forms, can be seen as the basic building blocks of communication tasks. As such, they can be used to analyze a diversity of classical and quantum protocols—of which dense coding and random access codes ...
Carlos Vieira +3 more
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The roles of quantum correlations in quantum cloning [PDF]
The European Physical Journal D, 2014 In this paper, we study the entanglement and quantum discord of the output modes in the unified $1\rightarrow 2$ state-dependent cloning and probabilistic quantum cloning. The tripartite entanglement among the output modes and the quantum cloning machine is also considered.
Shao-xiong Wu, Chang-shui Yu, Jun Zhang
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A method for measuring spatial resolution based on clinical chest CT sequence images
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose This study aimed to develop and validate a method for characterizing the spatial resolution of clinical chest computed tomography (CT) sequence images. Methods An algorithm for characterizing spatial resolution based on clinical chest CT sequence images was developed in Matlab (2021b).
Ying Liu +3 more
wiley +1 more source
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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Quantum correlation exists in any non-product state [PDF]
Scientific Reports 4:7179 (2014), 2014 Simultaneous existence of correlation in complementary bases is a fundamental feature of quantum correlation, and we show that this characteristic is present in any non-product bipartite state. We propose a measure via mutually unbiased bases to study this feature of quantum correlation, and compare it with other measures of quantum correlation for ...
arxiv +1 more source