Visibility enhancement in two-dimensional lensless ghost imaging with true thermal light

Chen Xi-Hao^{1, †}, Yan Ling¹, Wu Wei¹, Meng Shao-Ying^{1, ‡}, Wu Ling-An², Sun Zhi-Bin³, Wang Chao³, Zhai Guang-Jie³

(color online) Spatial HBT-type experimental results. Blue dots denote the measured values of intensity correlation function , red triangles the true values. Solid curves represent Gaussian fits of measured values (blue) and true values (red).