On high-efficiency optical communication and key distribution
Author(s)Kochman, Yuval; Wornell, Gregory W.
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We investigate modulation and coding techniques that approach the fundamental limits of communication and key distribution over optical channels, in the regime of simultaneously high photon and bandwidth efficiencies. First, we develop a simple and robust system design for free-space optical communication that incorporates pulse-position modulation (PPM) over multiple spatial degrees of freedom in order to achieve high photon and spectral efficiency. Further, in the context of key distribution, we determine the optimal rate using a Poisson source of entangled photon pairs and photon detectors, and show how to approach it using PPM parsing of the detected photon stream.
DepartmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Proceedings of the Information Theory and Applications Workshop (ITA), 2012
Institute of Electrical and Electronics Engineers (IEEE)
Kochman, Yuval, and Gregory W. Wornell. “On High-efficiency Optical Communication and Key Distribution.” Information Theory and Applications Workshop (ITA), 2012. 172–179.
Author's final manuscript