Generalized Ardehali-Bell inequalities for graph states

Details Generalized Ardehali-Bell inequalities for graph states Generalized Ardehali-Bell inequalities for graph states

2008-06-17

arxiv.org/abs/0806.2769v1

Phys. Rev. A 77 (2008) 032108

Physics

Quantum Physics

6 pages, 3 figures

Scientific paper

10.1103/PhysRevA.77.032108

We derive Bell inequalities for graph states by generalizing the approach
proposed by Ardehali [Phys. Rev. A 46, 5375 (1992)] for
Greenberger-Horne-Zeilinger (GHZ) states. Using this method, we demonstrate
that Bell inequalities with nonstabilizer observables are often superior to the
optimal GHZ-Mermin-type (or stabilizer-type) Bell inequalities.

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