High-Dimensional Time-Frequency Entanglement and Schmidt Number Witnesses Using a Biphoton Frequency Comb
Kai-Chi Chang, Xiang Cheng, Murat Can Sarihan, Abhinav Kumar, Yoo Seung Lee, Tian Zhong, Yan-Xiao Gong, Zhenda Xie, Jeffrey H. Shapiro, Franco N. C. Wong, Chee Wei Wong · Conference on Lasers and Electro-Optics · 2020
We demonstrated high-dimensional time-frequency entanglement with a mode-locked biphoton frequency comb. Hong-Ou-Mandel interference and joint spectral intensity measurements are performed, and we estimated Hilbert space dimensionality of at least 3481 via Schmidt mode decompositions.