A strong loophole-free test of local realism
Abstract
We present a loophole-free violation of local realism using entangled photon pairs. We ensure that all relevant events in our Bell test are spacelike separated by placing the parties far enough apart and by using fast random number generators and high-speed polarization measurements. A high-quality polarization-entangled source of photons, combined with high-efficiency, low-noise, single-photon detectors, allows us to make measurements without requiring any fair-sampling assumptions. Using a hypothesis test, we compute p-values as small as for our Bell violation while maintaining the spacelike separation of our events. We estimate the degree to which a local realistic system could predict our measurement choices. Accounting for this predictability, our smallest adjusted p-value is . We therefore reject the hypothesis that local realism governs our experiment.
Keywords
Cite
@article{arxiv.1511.03189,
title = {A strong loophole-free test of local realism},
author = {Lynden K. Shalm and Evan Meyer-Scott and Bradley G. Christensen and Peter Bierhorst and Michael A. Wayne and Martin J. Stevens and Thomas Gerrits and Scott Glancy and Deny R. Hamel and Michael S. Allman and Kevin J. Coakley and Shellee D. Dyer and Carson Hodge and Adriana E. Lita and Varun B. Verma and Camilla Lambrocco and Edward Tortorici and Alan L. Migdall and Yanbao Zhang and Daniel R. Kumor and William H. Farr and Francesco Marsili and Matthew D. Shaw and Jeffrey A. Stern and Carlos Abellán and Waldimar Amaya and Valerio Pruneri and Thomas Jennewein and Morgan W. Mitchell and Paul G. Kwiat and Joshua C. Bienfang and Richard P. Mirin and Emanuel Knill and Sae Woo Nam},
journal= {arXiv preprint arXiv:1511.03189},
year = {2016}
}
Comments
Supplemental material available as an ancillary file