5 October 2017 A flexible continuous-variable QKD system using off-the-shelf components
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We present the development of a robust and versatile CV-QKD architecture based on commercially available optical and electronic components. The system uses a pilot tone for phase synchronization with a local oscillator, as well as local feedback loops to mitigate frequency and polarization drifts. Transmit and receive-side digital signal processing is performed fully in software, allowing for rapid protocol reconfiguration. The quantum link is complemented with a software stack for secure-key processing, key storage and encrypted communication. All these features allow for the system to be at the same time a prototype for a future commercial product and a research platform.
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Lucian C. Comandar, Lucian C. Comandar, Hans H. Brunner, Hans H. Brunner, Stefano Bettelli, Stefano Bettelli, Fred Fung, Fred Fung, Fotini Karinou, Fotini Karinou, David Hillerkuss, David Hillerkuss, Spiros Mikroulis, Spiros Mikroulis, Dawei Wang, Dawei Wang, Maxim Kuschnerov, Maxim Kuschnerov, Changsong Xie, Changsong Xie, Andreas Poppe, Andreas Poppe, Momtchil Peev, Momtchil Peev, } "A flexible continuous-variable QKD system using off-the-shelf components", Proc. SPIE 10442, Quantum Information Science and Technology III, 104420A (5 October 2017); doi: 10.1117/12.2279913; https://doi.org/10.1117/12.2279913

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