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Project MESA Technical Specification Group document MESA_70.012_v1.2.1.doc



L T. Klein-berndt, Nader Moayeri


We have implemented a quantum key distribution (QKD) system with polarization encoding at 850 nm over 1 km of optical fiber. The high-speed management of the bit-stream, generation of random numbers and processing of the sifting algorithm are all handled by a pair of custom data handling circuit boards. As a complete system using a clock rate of 1.25 Gbit/s, it produces sifted keys at a rate of 1.1 Mb/s with an error rate lower than 1.3% while operating at a transmission rate of 312.5 Mbit/s and a mean photon number 5 = 0.1. With a number of proposed improvements this system has a potential for a higher key rate without an elevated error rate.
Project MESA


Klein-berndt, L. and Moayeri, N. (2005), Project MESA Technical Specification Group document MESA_70.012_v1.2.1.doc, Project MESA (Accessed April 15, 2024)
Created March 31, 2005, Updated October 12, 2021