Author(s): Hou Shun Poh, Siddarth K. Joshi, Alessandro Cerè, Adán Cabello, and Christian Kurtsiefer
Measurements of the correlation between pairs of photons provide the tightest test of local realism to date, with an order of magnitude reduction in the uncertainty compared with previous experiments.
[Phys. Rev. Lett. 115, 180408] Published Fri Oct 30, 2015