Indefinite Causal Order in a Quantum Switch. [PDF]
Physical Review Letters, 2018 Quantum mechanics allows events to happen with no definite causal order: this can be verified by measuring a causal witness, in the same way that an entanglement witness verifies entanglement.
K. Goswami +6 more
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Indefinite causal order enables perfect quantum communication with zero capacity channels [PDF]
New Journal of Physics, 2018 Quantum mechanics is compatible with scenarios where the relative order between two events can be indefinite. Here we show that two independent instances of a noisy process can behave as a perfect quantum communication channel when used in a coherent ...
G. Chiribella +8 more
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Enhanced Communication with the Assistance of Indefinite Causal Order. [PDF]
Physical Review Letters, 2017 In quantum Shannon theory, the way information is encoded and decoded takes advantage of the laws of quantum mechanics, while the way communication channels are interlinked is assumed to be classical.
Daniel Ebler, S. Salek, G. Chiribella
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Communication Enhancement through Quantum Coherent Control of N Channels in an Indefinite Causal-Order Scenario [PDF]
Entropy, 2019 In quantum Shannon theory, transmission of information is enhanced by quantum features. Up to very recently, the trajectories of transmission remained fully classical.
Lorenzo M. Procopio +4 more
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Experimental verification of an indefinite causal order [PDF]
Science Advances, 2016 Researchers report on the observation and characterization of a quantum process that lacks a predefined causal order. Investigating the role of causal order in quantum mechanics has recently revealed that the causal relations of events may not be a ...
Giulia Rubino +7 more
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Time-delocalized quantum subsystems and operations: on the existence of processes with indefinite causal structure in quantum mechanics [PDF]
Quantum, 2018 It has been shown that it is theoretically possible for there to exist higher-order quantum processes in which the operations performed by separate parties cannot be ascribed a definite causal order.
O. Oreshkov
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Identifying (In)Definiteness in Vietnamese Noun Phrase
Journal of the Southeast Asian Linguistics Society, 2022 This paper aims to settle the issue of whether những, các, một are articles in Vietnamese as argued by Nguyen T. C. (1975), Nguyen H. T. (2004), a.o.
Phan, Trang, Chierchia, Gennaro
doaj
Standing waves for quasilinear Schrödinger equations with indefinite potentials [PDF]
Journal of Differential Equations, 2018 We consider quasilinear Schrodinger equations in R N of the form − Δ u + V ( x ) u − u Δ ( u 2 ) = g ( u ) , where g ( u ) is 4-superlinear. Unlike all known results in the literature, the Schrodinger operator − Δ + V is allowed to be indefinite, hence ...
Shibo Liu, Jian Zhou
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In the periphery of an indefinite pronoun. Forms and functions of conceptual agreement with jemand
Zeitschrift für Sprachwissenschaft, 2023 In German, the social gender of the human referent matches the grammatical gender of the noun and pronoun in many cases. Nevertheless, those categories can also differ from each other.
Ellsäßer Sophie
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Positive solutions for perturbations of the Robin eigenvalue problem plus an indefinite potential [PDF]
, 2017 We study perturbations of the eigenvalue problem for the negative Laplacian plus an indefinite and unbounded potential and Robin boundary condition. First we consider the case of a sublinear perturbation and then of a superlinear perturbation.
Nikolaos S. Papageorgiou +2 more
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