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DTU-Lys Colloquia w. Prof. Colin McKinstrie
September 13, 2017 @ 1:30 pm - 2:30 pm
Parametric devices for optical communication and quantum information science
In this lecture, he will review briefly the history of optical communication systems. Subsequently, he will review the physics and performance characteristics of parametric devices, such as amplifiers, frequency convertors and phase conjugators, which are based on four-wave mixing in fibers. He will also describe some recent applications of these devices, such as tunable radiation generation, phase-sensitive amplification, buffering by frequency conversion and dispersion, and real-time sampling. Parametric devices can generate signal photons that remain pure after heralding (detecting the associated idler photons) and frequency convert photons without distorting their quantum state. He will describe recent advances in the modeling and implementation of these processes, which are key requirements for quantum information science.