Present and Simulation of an Efficient Scheme for Environmental Quantum Key Distribution in Optical Fiber Longer than 150 km

Document Type : Original Article

Author

Assistant Professor, Malek Ashtar University of Technology, Shahin-Shahr, Iran Malek Ashtar University of Technology, Shahin-Shahr, Iran

Abstract

The problem of achieving a higher secure key rate and a larger key distribution distance has always been the main concern of researchers in the field of quantum key distribution (QKD). Due to the loss of quantum states, there are many challenges in performing QKD in optical fiber with a secure key rate of the order of  and lengths higher than 50 . This paper presents the design and simulation of an efficient QKD system using all-fiber components, which has the capability of QKD at a reasonable rate up to a distance of 170 . This design enables QKD in 100  long single-mode optical fiber, with a quantum bit error rate (QBER) below 3%, a sifted key rate of 6 , and a secure key rate of 4.6 . All the designs and simulations have been done considering the experimental limitations and using physical parameters in harmony with the available tools, so that in case of possible implementation of the system, the results of these simulations are quite close to the experimental data. The development of this scheme can be a suitable candidate for achieving native commercial and industrial QKD systems.

Keywords

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References

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Journal of Advanced Defense Science & Technology
Volume 15, Issue 1 - Serial Number 55
Spring2024
June 2025
Pages 15-23

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History

  • Receive Date: 10 March 2024
  • Revise Date: 05 May 2024
  • Accept Date: 11 May 2024
  • Publish Date: 31 May 2024

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