Tight Multipartite Bell's Inequalities Involving Many Measurement Settings

Wiesław Laskowski, Tomasz Paterek, Marek Żukowski, and Časlav Brukner
Phys. Rev. Lett. 93, 200401 – Published 8 November 2004

Abstract

We derive tight Bell's inequalities for N>2 observers involving more than two alternative measurement settings. We give a necessary and sufficient condition for a general quantum state to violate the new inequalities. The inequalities are violated by some classes of states, for which all standard Bell’s inequalities with two measurement settings per observer are satisfied.

  • Received 16 September 2003

DOI:https://doi.org/10.1103/PhysRevLett.93.200401

©2004 American Physical Society

Authors & Affiliations

Wiesław Laskowski1, Tomasz Paterek1, Marek Żukowski1,2, and Časlav Brukner2,3

  • 1Instytut Fizyki Teoretycznej i Astrofizyki, Uniwersytet Gdański, PL-80-952 Gdańsk, Poland
  • 2Institut für Experimentalphysik, Universität Wien, Boltzmanngasse 5, A-1090 Wien, Austria
  • 3Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom

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Issue

Vol. 93, Iss. 20 — 12 November 2004

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