Bell inequality tests of four-photon six-qubit graph states

Wei-Bo Gao, Xing-Can Yao, Ping Xu, He Lu, Otfried Gühne, Adán Cabello, Chao-Yang Lu, Tao Yang, Zeng-Bing Chen, and Jian-Wei Pan
Phys. Rev. A 82, 042334 – Published 27 October 2010

Abstract

We now experimentally demonstrate a Y-shaped graph state with photons’ polarization and spatial modes as qubits. Based on this state and a linear-type graph state, we report on the experimental realization of two different Bell inequality tests, which represent higher violation than previous Bell tests.

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  • Received 25 June 2009

DOI:https://doi.org/10.1103/PhysRevA.82.042334

©2010 American Physical Society

Authors & Affiliations

Wei-Bo Gao1, Xing-Can Yao1, Ping Xu1, He Lu1, Otfried Gühne2,3,4, Adán Cabello5, Chao-Yang Lu1, Tao Yang1, Zeng-Bing Chen1, and Jian-Wei Pan1,6

  • 1Department of Modern Physics, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
  • 2Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Technikerstraße 21A, A-6020 Innsbruck, Austria
  • 3Institut für Theoretische Physik, Universität Innsbruck, Technikerstraße 25, A-6020 Innsbruck, Austria
  • 4Fachbereich Physik, Universität Siegen, Walter-Flex-Str. 3, 57068 Siegen, Germany
  • 5Departamento de Física Aplicada II, Universidad de Sevilla, E-41012 Sevilla, Spain
  • 6Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Philosophenweg 12, D-69120 Heidelberg, Germany

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Issue

Vol. 82, Iss. 4 — October 2010

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