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Quantum-classical interaction noise and mitigation in shared optical fibre system
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DOI：10.1080/09500340.2026.2628815.png)
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Abstract
En 中文
Scalability in quantum networks requires the co-propagation of quantum and classical signals within shared optical fibres. However, classical fields interact with thermally induced atomic vibrations (phonons), generating scattering and noise that degrade quantum information. We model this interaction using a random Hamiltonian and the Lindblad master equation, accounting for both deterministic and stochastic noise components. To mitigate these effects, we propose a novel control method that introduces a counter-potential to cancel the average interaction noise. Simulations indicate a significant reduction in the noise-to-signal energy ratio using this approach. Additionally, we analyse a fully quantized scenario involving quantum phonon lattices and noise. We outline a method for generating counter-TPCP (Trace-Preserving Completely Positive) maps to neutralize these interactions. Finally, we provide a Monte Carlo algorithm, based on the LucBouten method, to construct these counter maps using a random potential. This research fosters robust, high-efficiency quantum technology development.
Keywords:
Quantum key distribution
quantum communication
classical-quantum interaction
co-existing classical and quantum signals in optical fibre
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J
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0.8
Papers:
76
Citations:
4.8K
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Cited Papers