Fake calibration attack using a beam sampler in a continuous variable-quantum key distribution system

• J. A. López-Leyva ^[3] ; A. Talamantes-Álvarez ^[4] ; E. A. Mejía ^[3] ; J. Estrada ^[3] ; M. Ponce Camacho ^[3] ; V. Ramos García ^[1] ; L. Casemiro Oliveira ^[2]
  1. [1] Universidad de Sonora

     Universidad de Sonora

     México

     
  2. [2] Universidade Federal Rural do Semi-Árido

     Universidade Federal Rural do Semi-Árido

     Brasil

     
  3. [3] CETYS University, Center for Innovation and Design, Mexico
  4. [4] CICESE Research Center, Baja California, México

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• Localización: Revista Mexicana de Física, ISSN-e 0035-001X, Vol. 66, Nº. 2, 2020, págs. 228-231
• Idioma: inglés
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• Resumen

  • A Fake Calibration Attack process for a Continuous Variable-Quantum Key Distribution system using a Beam Sampler is presented. The Fake Calibration Attack allows a calibration that balances the Standard Quantum Limit for all the optical path in the experiment (differential Standard Quantum Limit is ≈ 0.39 dB), allowing Eve to acquire ≈ 0.0671 for a particular information quadrature which establishes a Quantum Bit Error Rate ≈ 5.8%. As a final result, the balancing of the Standard Quantum Limit for both states of polarization signals allows maintaining the overall Quantum Bit Error Rate at a particular value ≈ 3%, which implies an important basis for detecting a potential spy considering the minimum Quantum Bit Error Rate.