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Title: A fast and versatile quantum key distribution system with hardware key distillation and wavelength multiplexing
Authors: Walenta, N
Burg, A
Caselunghe, D
Constantin, J
Gisin, N
Guinnard, O
Houlmann, R
Junod, P
Korzh, B
Kulesza, N
Legré, M
Lim, C.W 
Lunghi, T
Monat, L
Portmann, C
Soucarros, M
Thew, R.T
Trinkler, P
Trolliet, G
Vannel, F
Zbinden, H
Issue Date: 2014
Citation: Walenta, N, Burg, A, Caselunghe, D, Constantin, J, Gisin, N, Guinnard, O, Houlmann, R, Junod, P, Korzh, B, Kulesza, N, Legré, M, Lim, C.W, Lunghi, T, Monat, L, Portmann, C, Soucarros, M, Thew, R.T, Trinkler, P, Trolliet, G, Vannel, F, Zbinden, H (2014). A fast and versatile quantum key distribution system with hardware key distillation and wavelength multiplexing. New Journal of Physics 16 : 13047. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: We present a compactly integrated, 625 MHz clocked coherent one-way quantum key distribution system which continuously distributes secret keys over an optical fibre link. To support high secret key rates, we implemented a fast hardware key distillation engine which allows for key distillation rates up to 4 Mbps in real time. The system employs wavelength multiplexing in order to run over only a single optical fibre. Using fast gated InGaAs single photon detectors, we reliably distribute secret keys with a rate above 21 kbps over 25 km of optical fibre. We optimized the system considering a security analysis that respects finite-key-size effects, authentication costs and system errors for a security parameter of ?QKD = 4 × 10-9. © 2014 IOP Publishing and Deutsche Physikalische Gesellschaft.
Source Title: New Journal of Physics
ISSN: 1367-2630
DOI: 10.1088/1367-2630/16/1/013047
Rights: Attribution 4.0 International
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