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Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
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Benchmarking of quantum protocols.

Chin-Te Liao1, Sima Bahrani2,3, Francisco Ferreira da Silva4,5

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Simulating quantum network protocols reveals critical performance limitations due to hardware imperfections. Key findings include qubit decoherence times for quantum money and anonymous transmission, and gate fidelity for blind quantum computation, essential for future quantum networks.

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Area of Science:

  • Quantum Information Science
  • Quantum Communication
  • Quantum Computation

Background:

  • Quantum network protocols promise enhanced security and computational capabilities.
  • Current quantum hardware immaturity hinders practical implementation of many quantum protocols.
  • Simulation is crucial for evaluating protocol performance under realistic, noisy conditions.

Purpose of the Study:

  • To assess the performance of key quantum protocols in near-future quantum networks.
  • To investigate the impact of various noise sources on protocol functionalities.
  • To determine critical parameters for the practical viability of selected quantum protocols.

Main Methods:

  • Utilized the NetSquid simulation platform to model quantum network protocols.
  • Evaluated four distinct protocols: quantum money, W-state anonymous transmission, verifiable blind quantum computation, and quantum digital signature.
  • Analyzed the effects of noise, including decoherence and gate imperfections, on protocol performance metrics.

Main Results:

  • Quantum money requires a decoherence time constant at least three times the qubit storage time.
  • W-state anonymous transmission demands quantum memory storage times less than half the decoherence time for fidelity above 0.8.
  • Verifiable blind quantum computation security degrades significantly with gate depolarizing probability ≥ 0.05; channel loss impacts quantum digital signature repudiation.

Conclusions:

  • Hardware imperfections impose stringent requirements on the practical deployment of quantum network protocols.
  • Specific noise parameters, such as decoherence and gate fidelity, are critical for achieving desired performance levels.
  • Simulation-based analysis provides essential insights for guiding future quantum hardware development and protocol optimization.