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<p>This research aims to evaluate how well quantum repeaters work and their success rate in fiber-based quantum networks where the midpoint locations are not the same. It looks at how different timing patterns (Gaussian and Lorentzian) and the chance of false signals (dark count probability) impact the quality and uniqueness of the photons traveling through the network. This work’s distinctive contribution is its thorough examination of the consequences of repeater placement asymmetry in conjunction with different dark count probabilities—an element that was frequently overlooked in earlier research. Important results show that fidelity is strongly affected by increasing dark count probability along the communication path, and the indistinguishability factor significantly depends on the temporal standard deviation of photon pulses. For long-distance quantum communication, these findings are essential for creating optimized quantum repeater systems with improved performance and dependability. All things considered, this study offers fresh perspectives on how to optimize communication fidelity and success rates by adjusting the design parameters of quantum networks.</p>

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An investigation of success probability and fidelity of quantum repeater in asymmetry in midpoint placement in fiber-based quantum networks

  • 期刊论文

  • 发表日期：

    2025年8月6日

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  • Al-B. F. A. Mohammed,
  • Saba T. Al-hadeethi,
  • Hayder H. Al-khaylani,
  • Taha A. Elwi,
  • Essam N. Abdulla

摘要

This research aims to evaluate how well quantum repeaters work and their success rate in fiber-based quantum networks where the midpoint locations are not the same. It looks at how different timing patterns (Gaussian and Lorentzian) and the chance of false signals (dark count probability) impact the quality and uniqueness of the photons traveling through the network. This work’s distinctive contribution is its thorough examination of the consequences of repeater placement asymmetry in conjunction with different dark count probabilities—an element that was frequently overlooked in earlier research. Important results show that fidelity is strongly affected by increasing dark count probability along the communication path, and the indistinguishability factor significantly depends on the temporal standard deviation of photon pulses. For long-distance quantum communication, these findings are essential for creating optimized quantum repeater systems with improved performance and dependability. All things considered, this study offers fresh perspectives on how to optimize communication fidelity and success rates by adjusting the design parameters of quantum networks.