High-rate large-alphabet quantum key distribution over deployed telecom fiber
Catherine Lee, Darius Bunandar, Zheshen Zhang, Gregory R. Steinbrecher, P. Ben Dixon, Franco N. C. Wong, Jeffrey H. Shapiro, Scott A. Hamilton, Dirk Englund · Conference on Lasers and Electro-Optics · 2016
We develop and implement a large-alphabet, dispersive-optics, prepare-and-measure quantum-key-distribution protocol. We demonstrate 35 Mbps secret-key rates in the laboratory and 300 kbps over a 43-km deployed fiber.