All-Versus-Nothing Violation of Local Realism by Two-Photon, Four-Dimensional Entanglement
Tao Yang, Qiang Zhang, Jun Zhang, Juan Yin, Zhi Zhao, Marek Żukowski, Zeng‐Bing Chen, Jian-Wei Pan · Physical Review Letters · 2005
We develop and exploit a source of two-photon, four-dimensional entanglement to report the first two-particle all-versus-nothing test of local realism with a linear optics setup, but without resorting to a noncontextuality assumption. Our experimental results are in good agreement with quantum mechanics while in extreme contradiction to local realism. Potential applications of our experiment are briefly discussed.