Ladder Proof of Nonlocality without Inequalities: Theoretical and Experimental Results

D. Boschi, S. Branca, F. De Martini, and L. Hardy
Phys. Rev. Lett. 79, 2755 – Published 13 October 1997
PDFExport Citation

Abstract

We show how a previous demonstration of nonlocality without inequalities for two spin-half particles can be improved so that a greater proportion of the pairs are shown to be subject to a contradiction with local realism. This is achieved by considering more settings of the apparatus at each end. Also, we report on an experimental realization employing a tunable source of polarization entangled photons. The experimental results violate locality (modulo, the efficiency loophole).

  • Received 27 May 1997

DOI:https://doi.org/10.1103/PhysRevLett.79.2755

©1997 American Physical Society

Authors & Affiliations

D. Boschi, S. Branca, F. De Martini, and L. Hardy

  • Dipartimento di Fisica, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica della Materia, Università “La Sapienza,” Roma 00185, Italy

References (Subscription Required)

Click to Expand
Issue

Vol. 79, Iss. 15 — 13 October 1997

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×