Violations of local realism by two entangled quNits are stronger than for two qubits

Preprint

25 September 2000

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.quant-ph/0005028

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

TWO ENTANGLED QUNITS
VIOLATIONS OF LOCAL
LOCAL REALISM
HILBERT SPACE
TWO QUBITS

All Related Versions

Version 1, 2000-05-06, ArXiv
Version 2, 2000-06-01, ArXiv
Version 3, 2000-09-25, ArXiv
Published version: Physical Review Letters, 85 (21), 4418.

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