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Entanglement Theory Quantum Correlations

Experimental test of nonlocal realistic theories without the rotational symmetry assumption

arXiv
Authors: Tomasz Paterek, Alessandro Fedrizzi, Simon Groeblacher, Thomas Jennewein, Marek Zukowski, Markus Aspelmeyer, Anton Zeilinger

Year

2007

Paper ID

49444

Status

Preprint

Abstract Read

~2 min

Abstract Words

86

Citations

N/A

Abstract

We analyze the class of nonlocal realistic theories that was originally considered by Leggett [Found. Phys. 33, 1469 (2003)] and tested by us in a recent experiment [Nature (London) 446, 871 (2007)]. We derive an incompatibility theorem that works for finite numbers of polarizer settings and that does not require the previously assumed rotational symmetry of the two-particle correlation functions. The experimentally measured case involves seven different measurement settings. Using polarization-entangled photon pairs, we exclude this broader class of nonlocal realistic models by experimentally violating a new Leggett-type inequality by 80 standard deviations.

Why This Paper Matters

  • This paper contributes to the Entanglement Theory & Quantum Correlations research area in the Quantum Articles archive.
  • It adds a 2007 reference point for readers tracking recent quantum research.
  • We analyze the class of nonlocal realistic theories that was originally considered by Leggett [Found.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:0708.0813 [2] arXiv https://arxiv.org/abs/0708.0813 [3] Publisher https://arxiv.org/abs/0708.0813

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External citation index: OpenAlex citation signal

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