منابع مشابه
Quantum communication complexity advantage implies violation of a Bell inequality.
We obtain a general connection between a large quantum advantage in communication complexity and Bell nonlocality. We show that given any protocol offering a sufficiently large quantum advantage in communication complexity, there exists a way of obtaining measurement statistics that violate some Bell inequality. Our main tool is port-based teleportation. If the gap between quantum and classical...
متن کاملBell inequality, nonlocality and analyticity
The Bell and the Clauser-Horne-Shimony-Holt inequalities are shown to hold for both the cases of complex and real analytic nonlocality in the setting parameters of Einstein-Podolsky-Rosen-Bohm experiments for spin 12 particles and photons, in both the deterministic and stochastic cases. Therefore, the theoretical and experimental violation of the inequalities by quantum mechanics excludes all h...
متن کاملMaximally entangled states and the Bell inequality∗
Kar’s recent proof showing that a maximally entangled state of two spin-1/2 particles gives the largest violation of a Bell inequality is extended to N spin-1/2 particles (N ≥ 3). In particular, it is shown that all the states yielding a direct contradiction with the assumption of local realism do generally consist of a superposition of maximally entangled states. Recently, Kar (see Ref. [1], a...
متن کاملThe Bell inequality: a measure of entanglement?
Entanglement is a critical resource used in many current quantum information schemes. As such entanglement has been extensively studied in two qubit systems and its entanglement nature has been exhibited by violations of the Bell inequality. Can the amount of violation of the Bell inequality be used to quantify the degree of entanglement? What do Bell inequalities indicate about the nature of e...
متن کاملCorrection for Buhrman et al., Quantum communication complexity advantage implies violation of a Bell inequality.
PHYSICS Correction for “Quantum communication complexity advantage implies violation of a Bell inequality,” by Harry Buhrman, Łukasz Czekaj, Andrzej Grudka, Michał Horodecki, Paweł Horodecki, Marcin Markiewicz, Florian Speelman, and Sergii Strelchuk, which appeared in issue 12, March 22, 2016, of Proc Natl Acad Sci USA (113:3191–3196; first published March 8, 2016; 10.1073/ pnas.1507647113). Th...
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ژورنال
عنوان ژورنال: National Science Review
سال: 2018
ISSN: 2095-5138,2053-714X
DOI: 10.1093/nsr/nwy075