Observation of non-locality sharing among three observers with one entangled pair via optimal weak measurement

• DOI: 10.1038/s41534-018-0115-x
• Publication Date: 2018-11-26T15:05:27Z
• Authors: Meng-Jun Hu; Zhi-Yuan Zhou; Xiao-Min Hu; Chuan-Feng Li; Guang-Can Guo; Yong-Sheng Zhang
• Keywords: Bell test experiments; CHSH inequality

Abstract Bell non-locality plays a fundamental role in quantum theory. Numerous tests of the inequality have been reported as ground-breaking discovery theorem. Up to now, however, most discussions scenario focused on single pair entangled particles distributed only two separated observers. Recently, it has shown surprisingly that multiple observers can share from an using method weak measurement without post-selection [Phys. Rev. Lett. 114 , 250401 (2015)]. Here we report observation double CHSH-Bell violations for photons with strength continuous-tunable optimal photonic system. Our results shed new light interplay between and measurements our design protocol may also be significant important applications such unbounded randomness certification steering.