Year: 2006
Type: article
Abstract: We present a family of Bell inequalities involving only two measurement settings of each party for $N>2$ qubits. Our inequalities include all the standard ones with fewer than $N$ qubits and thus give a natural generalization. It is shown that all the Greenberger-Horne-Zeilinger states violate the inequalities maximally, with an amount that grows exponentially as ${2}^{(N\ensuremath{-}2)∕2}$. The inequalities are also violated by some states that do satisfy all the standard Bell inequalities. Remarkably, our results yield in an efficient and simple way an implementation of nonlocality tests of many qubits favorably within reach of the well-established technology of linear optics.
Source: Physical Review A
Authors: Kai Chen, Sergio Albeverio, Shao-Ming Fei
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2016226543