Erika Andersson, Institute of Photonics and Quantum Sciences Heriot-Watt University
Electra Eleftheriadou, University of Strathclyde
In practical applications of communication schemes it is often necessary to amplify the transmitted signals. Because of the intrinsic noise due to Heisenberg's uncertainty principle, a quantum signal requires an amplification process which is different than the one used for classical signals.
Feihu Xu, University of Toronto
In theory, quantum key distribution (QKD) provides information-theoretic security based on the laws of physics. Owing to the imperfections of real-life implementations, however, there is a big gap between the theory and practice of QKD. This gap has been recently exploited by several quantum hacking activities.