Adaptive low density parity check encoder for a complete free space optics/continuous variable-quantum key distribution system using commercially available off-the-shelf devices for variable throughput network considering dynamical atmospheric turbulence levels

• J.A. López-Leyva ^[1] ; A. Arvizu-Mondragón ^[2] ; J. Santos-Aguilar ^[2] ; R. Ramos-García ^[3] ; A. Talamantes-Álvarez ^[1]
  1. [1] CETYS University, Ensenada, México
  2. [2] CICESE Research Center. Baja California, México
  3. [3] University of Alabama, Tuscaloosa, USA

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• Localización: Revista Mexicana de Física, ISSN-e 0035-001X, Vol. 64, Nº. 5, 2018, págs. 478-482
• Idioma: inglés
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• Resumen

  • In this paper, an adaptive LDPC encoder for complete FSO/CV-QKD system using a COTS device for emulated dynamical atmospheric turbulence levels is presented. The experimental and emulation results show the maximum and minimal final secret key rates of 105 Kbps and 10 Kbps, respectively, for minimal and maximal throughput in a commercial network, 30 Mbps and 90 Mbps, respectively. Our proposal presents an adequate performance for weak and moderate atmospheric turbulence levels and a suitable option for improve the using of QKD systems.