Quantification of High-dimensional Energy-time Entanglement in a Biphoton Frequency Comb
Kai-Chi Chang, Xiang Cheng, Murat Can Sarihan, Abhinav Kumar Vinod, Tian Zhong, Yan-Xiao Gong, Zhenda Xie, Jeffrey H. Shapiro, Franco N. C. Wong, Chee Wei Wong · Conference on Lasers and Electro-Optics · 2021
We quantify high-dimensional energy-time entanglement with a filtered biphoton frequency comb. Franson interference measurements are performed, with the entanglement of formation up to 1.89 ± 0.03 ebits for a 45.32 GHz biphoton frequency comb.