Beijing Key Laboratory of Nanophotonics &Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, 100081, Beijing, China.
Beijing Key Laboratory of Nanophotonics &Ultrafine Optoelectronic Systems, Kunming Institute of Physics, Kunming, 650223, China.
Sci Rep. 2017 Mar 14;7:44467. doi: 10.1038/srep44467.
The Klyachko, Can, Binicioglu, and Shumovsky (KCBS) inequality is an important contextuality inequality in three-level system, which has been demonstrated experimentally by using quantum states. Using the path and polarization degrees of freedom of classical optics fields, we have constructed the classical trit (cetrit), tested the KCBS inequality and its geometrical form (Wright's inequality) in this work. The projection measurement has been implemented, the clear violations of the KCBS inequality and its geometrical form have been observed. This means that the contextuality inequality, which is commonly used in test of the conflict between quantum theory and noncontextual realism, may be used as a quantitative tool in classical optical coherence to describe correlation characteristics of the classical fields.
克利亚克科、坎、宾西乔格鲁和舒莫夫斯基（KCBS）不等式是三能级系统中的一个重要的语境不等式，已经通过使用量子态在实验中得到了验证。我们利用经典光学场的路径和偏振自由度，构建了经典三进制（cetrit），并在这项工作中测试了 KCBS 不等式及其几何形式（赖特不等式）。我们已经实施了投影测量，观察到了 KCBS 不等式及其几何形式的明显违反。这意味着，在量子理论与非语境实在论之间的冲突测试中常用的语境不等式，可能被用作经典光学相干性中的定量工具，以描述经典场的相关特征。
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