1 Mbps coherent one-way QKD with dense wavelength division multiplexing and hardware key distillation
Article 2012 en
Authors
NW
Nino Walenta
AB
Andreas Burg
JC
Jeremy Constantin
Abstract
1 min read
We present the latest results obtained with a quantum cryptography prototype based on a coherent-one way quantum key distribution (QKD) scheme. To support its continuous high rate secret key generation we developed different low-noise single photon detectors for telecom wavelength based on a sine gating and low-pass-filtering technique, as well as a negative feedback APD in an active hold-off circuit. A newly developed hardware distillation engine allows for continuous operation of secret key distribution up to 1 Mbps. We also present results of our system in a DWDM (dense wavelength-division multiplexing) configuration where only one single fiber is needed to interconnect Alice’ and Bob’s systems. The final prototype is fully compatible to serve a high-speed encryption device developed in parallel which provides encrypted communication of up to 100 Gbps.
Nino Walenta, Andreas Burg, Dario Caselunghe, Joseph Constantin, Nicolas Gisin, Olivier Guinnard, Raphaël Houlmann, Pascal Junod, Boris Korzh, Natalia Kulesza, Matthieu Legré, Charles Ci Wen Lim, Tommaso Lunghi, Laurent Monat, C. Portmann, Mathilde Soucarros, Rob Thew, Patrick Trinkler, Gregory Trolliet, Fabien Vannel, Hugo Zbinden
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