We report an experimental demonstration of sub-wavelength interference without correlation. Typically, people can achieve sub-wavelength effect with correlation measurement no matter by using bi-photon or thermal light sources. Here we adopt a thermal light source. And we count the realizations in which the intensities of the definite symmetric points are above or below a certain threshold. The distribution of numbers of these realizations who satisfy the restriction will show a sub-wavelength effect. With proper constrictions, positive and negative interference patterns are demonstrated.
@article{arxiv.1903.03795,
title = {Is it necessary to achieve sub-wavelength interference with correlation?},
author = {Ling-Yu Dou and De-Zhong Cao and De-Qin Xu and Xin-Bing Song},
journal= {arXiv preprint arXiv:1903.03795},
year = {2019}
}