High-dimensional time-energy entanglement-based quantum key distribution using dispersive optics
Catherine Lee, Zheshen Zhang, Jacob Mower, Greg Steinbrecher, Hongchao Zhou, Ligong Wang, Xiao‐Long Hu, Robert D. Horansky, Varun Boehm Verma, Michael S. Allman, Adriana E. Lita, Richard P. Mirin, Francesco Marsili, Andrew D. Beyer, Matthew D. Shaw, Sae Woo Nam, Gregory W. Wornell, Franco N. C. Wong, Jeffrey H. Shapiro, Dirk Englund · 2014
We implement a high-dimensional quantum key distribution protocol secure against collective attacks. We transform between conjugate measurement bases using group velocity dispersion. We obtain > 3 secure bits per photon coincidence.