نتایج جستجو برای: chsh inequality

تعداد نتایج: 57242  

2005
Ian T. Durham

This paper follows up on a recent pre-print (Durham [2005]) by first deriving a set theoretic relationship between the generalized uncertainty relations and the Clauser-Horne inequalities. The physical, metaphysical, and metamathematical implications and problems are then explored. The discussion builds on previous work by Pitowsky [1994] and suggests that there is a fundamental problem in quan...

Journal: :CoRR 2018
Aritra Das Pratyusha Chowdhury

It has been extensively shown in past literature that Bayesian Game Theory and Quantum Non-locality have strong ties between them. Pure Entangled States have been used, in both common and conflict interest games, to gain advantageous payoffs, both at the individual and social level. In this paper we construct a game for a Mixed Entangled State such that this state gives higher payoffs than clas...

2017
M. P. Seevinck

The no-signaling constraint on bi-partite correlations is reviewed. It is shown that in order to obtain non-trivial Bell-type inequalities that discern no-signaling correlations from more general ones, one must go beyond considering expectation values of products of observables only. A new set of nontrivial no-signaling inequalities is derived which have a remarkably close resemblance to the CH...

Journal: :Photonics Research 2023

Single-photon entanglement is a peculiar type of in which two or more degrees freedom single photon are correlated quantum-mechanically. Here, we demonstrate photonic integrated chip able to generate and manipulate single-photon path-entangled states, using commercial red LED as light source. A Bell test, the Clauser, Horne, Shimony, Holt (CHSH) form, performed confirm presence entanglement, re...

2017
Andrea Crespi Marco Bentivegna Ioannis Pitsios Davide Rusca Davide Poderini Gonzalo Carvacho Vincenzo D’Ambrosio Adán Cabello Fabio Sciarrino Roberto Osellame

In classical physics, properties of objects exist independently of the context, i.e., whether and how measurements are performed. Quantum physics showed this assumption to be wrong, and that Nature is indeed "contextual". Contextuality has been observed in the simplest physical systems, such as single particles, and plays fundamental roles in quantum computation advantage. Here, we demonstrate ...

2015
Ming Li Tinggui Zhang Bobo Hua Shao-Ming Fei Xianqing Li-Jost

We study the nonlocality of arbitrary dimensional bipartite quantum states. By computing the maximal violation of a set of multi-setting Bell inequalities, an analytical and computable lower bound has been derived for general two-qubit states. This bound gives the necessary condition that a two-qubit state admits no local hidden variable models. The lower bound is shown to be better than that f...

2014
Jean Etesse Rémi Blandino Bhaskar Kanseri Rosa Tualle-Brouri

We demonstrate that different kinds of mesoscopic quantum states of light can be efficiently generated from a simple iterative scheme. These states exhibit strong non-classical features, and could be of great interest for many applications such as quantum error-correcting codes or fundamental testings. Based on these states, we further propose a protocol allowing a large loophole-free violation...

Journal: :Physical review research 2022

Device-independent certification, also known as self-testing, aims at guaranteeing the proper functioning of untrusted and uncharacterized devices. For example, quality an unknown source expected to produce two-qubit maximally entangled states can be evaluated in a bi-partite scenario, each party using two binary measurements. The most robust approach consists deducing fidelity produced with re...

2016
Long Tian Shujing Li Haoxiang Yuan Hai Wang

Using the process of cavity-enhanced spontaneous parametric down-conversion (SPDC), we generate a narrow-band polarization-entangled photon pair resonant on the rubidium (Rb) D1 line (795 nm). The degenerate single-mode photon pair is selected by multiple temperature controlled etalons. The linewidth of generated polarization-entangled photon pairs is 15MHz which matches the typical atomic memo...

2008
Sujit K. Choudhary Guruprasad Kar Samir Kunkri Ramij Rahaman

Tsirelson showed that 2 √ 2 is the maximum value that CHSH expression can take for quantumcorrelations [B. S. Tsirelson Lett. Math. Phys. 4, (1980) 93]. This bound simply follows from the algebra of observables. Recently by exploiting the physical structure of quantum mechanics like unitarity and linearity, Buhrman and Massar [H. Buhrman and S. Massar Phys. Rev. A 72, (2005) 052103] have establ...

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