Open AccessExperimental observation of quantum state-independent contextuality under no-signaling conditions
Author(s) -
Ya Xiao,
Zhen-Peng Xu,
Qiang Li,
JinShi Xu,
Kai Sun,
Jin-Ming Cui,
ZongQuan Zhou,
Hong-Yi Su,
Adán Cabello,
Jing-Ling Chen,
ChuanFeng Li,
GuangCan Guo
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.000032
Subject(s) - kochen–specker theorem , context (archaeology) , quantum mechanics , computer science , quantum , photon , theoretical physics , physics , statistical physics , computation , mathematics , algorithm , paleontology , biology
Contextuality, the impossibility of assigning context-independent measurement outcomes, is a critical resource for quantum computation and communication. No-signaling between successive measurements is an essential requirement that should be accomplished in any test of quantum contextuality and that is difficult to achieve in practice. Here, we introduce an optimal quantum state-independent contextuality inequality in which the deviation from the classical bound is maximal. We then experimentally test it using single photons generated from a defect in a bulk silicon carbide, while satisfying the requirement of no-signaling within the experimental error. Our results shed new light on the study of quantum contextuality under no-signaling conditions.