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arXiv · 1603.08254

Nonlocality from local contextuality

Bi-Heng Liu·Xiao-Min Hu·Jiang-Shan Chen·Yun-Feng Huang·Yong-Jian Han·Chuan-Feng Li·Guang-Can Guo·Adán Cabello
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Abstract

We experimentally show that nonlocality can be produced from single-particle contextuality by using two-particle correlations which do not violate any Bell inequality by themselves. This demonstrates that nonlocality can come from an {\em a priori} different simpler phenomenon, and connects contextuality and nonlocality, the two critical resources for, respectively, quantum computation and secure communication. From the perspective of quantum information, our experiment constitutes a proof of principle that quantum systems can be used simultaneously for both quantum computation and secure communication.

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Bi-Heng Liu, Xiao-Min Hu, Jiang-Shan Chen, Yun-Feng Huang, Yong-Jian Han, Chuan-Feng Li, Guang-Can Guo, Adán Cabello. 2016-11-23. Nonlocality from local contextuality. https://doi.org/10.1103/physrevlett.117.220402

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