Violations of local realism by two entangled quNits are stronger than for two qubits
Quantum Physics
2009-11-06 v3
Abstract
Tests of local realism vs quantum mechanics based on Bell's inequality employ two entangled qubits. We investigate the general case of two entangled quNits, i.e. quantum systems defined in an N-dimensional Hilbert space. Via a numerical linear optimization method we show that violations of local realism are stronger for two maximally entangled quNits (N=3,4,...,9), than for two qubits and that they increase with N. The two quNit measurements can be experimentally realized using entangled photons and unbiased multiport beamsplitters.
Keywords
Cite
@article{arxiv.quant-ph/0005028,
title = {Violations of local realism by two entangled quNits are stronger than for two qubits},
author = {D. Kaszlikowski and P. Gnacinski and M. Zukowski and W. Miklaszewski and A. Zeilinger},
journal= {arXiv preprint arXiv:quant-ph/0005028},
year = {2009}
}
Comments
5 pages, 2 pictures, LaTex, two columns; No changes in the results