On Bell's theorem for N-qubits

Author(s)
Marek Zukowski, Caslav Brukner
Abstract

We present a single general Bell inequality that summarizes all possible Bell type constrains on the correlation function for the N-particle system (i.e., it is a necessary and sufficient condition for the existence of local realistic models for the correlation function). It is applicable in the case when measurements on each particle can be chosen between two arbitrary dichotomic observables. We also obtain a necessary and sufficient condition for an arbitrary N-qubit mixed state to violate this general Bell inequality.

Organisation(s)
Quantum Optics, Quantum Nanophysics and Quantum Information
Journal
Fortschritte der Physik
Volume
51
Pages
531-538
No. of pages
8
ISSN
0015-8208
DOI
https://doi.org/10.1002/prop.200310071
Publication date
2003
Austrian Fields of Science 2012
103026 Quantum optics
Portal url
https://ucris.univie.ac.at/portal/en/publications/on-bells-theorem-for-nqubits(c65065f2-6a2b-40ca-bca8-e9df7548c1a6).html