Software package for modeling the optical path of a quantum communication system

DOI: 10.21293/1818-0442-2026-29-2-140-147

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Abstract: The paper presents a software package for modeling the optical path of quantum communication systems based on discrete event processing of photonic packets on a unified time scale. Relevance. Reliable modeling of a quantum channel is essential for the design and investigation of quantum key distribution systems. Purpose of the study. Development of a software package for modeling an optical channel and evaluating the effect of its parameters on system characteristics. Methods. Discrete event modeling was employed. Scientific novelty. A software framework is proposed that integrates the physical and protocol levels of modeling, together with mathematical support for assessing the combined influence of physical factors on system performance. Results. A software package has been developed to assess the influence of channel and equipment parameters on the quantum bit error rate (QBER) and key generation rate; the model's validity has been confirmed through computational experiments. Practical significance. The software package is intended for the design, prototyping and verification of quantum key distribution systems.

Keywords: quantum channel, fiber-optic communication line, simulation, laser pulse, single-photon detector, C++

Funding: The work was supported by the Ministry of Science and Higher Education of the Russian Federation within the framework of the basic part of the TUSUR state assignment for 2026-2028 (project FEWM-2026-0009).

For citation:
Chukov K. I., Faerman V. A. Software package for modeling the optical path of a quantum communication system. Doklady Tomskogo gosudarstvennogo universiteta sistem upravleniya i radioelektroniki, 2026, vol. 29, no. 2, pp. 140–147. DOI: 10.21293/1818-0442-2026-29-2-140-147

Authors and copyright holders:

  • Chukov K. I. , Tomsk State University of Control Systems and Radioelectronics (TUSUR)
  • Faerman V. A. , Tomsk State University of Control Systems and Radioelectronics (TUSUR)

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