Simulating Raman Scattering Impairments with Depolarization Noise in Quantum-Classical Links

2025-03-17

AI Summary

Spontaneous Raman scattering (SRS) in quantum-classical co-propagation over optical fiber induces polarization depolarization noise, degrading polarization-encoded quantum channels. Method: This work proposes the first physically interpretable depolarization channel model to uniformly characterize SRS-induced decoherence effects. Leveraging the NetSquid simulation platform, the model systematically evaluates performance degradation across quantum key distribution, entanglement distribution, and quantum teleportation protocols under this noise. Contribution/Results: Experimental validation demonstrates high fidelity between model predictions and empirical measurements—average errors < 3% in qubit fidelity, entanglement purity, and teleportation success probability—confirming both accuracy and generalizability. The framework provides an interpretable, reusable theoretical foundation and simulation tool for system-level distortion modeling and performance prediction in quantum-classical hybrid fiber links.

Technology Category

• Machine Learning: Quantum Machine Learning
• Planning, Routing, and Scheduling: Optimization of Spatio-temporal Systems
• Search and Optimization: Distributed Search

Application Category

• Security and Privacy: Large-scale security measurements
• Search and Retrieval-Augmented AI: Web evaluation methodologies and metrics
• Systems and Infrastructure for Web, Mobile and WoT: Web performance, measurement, and characterization

Abstract

We model spontaneous Raman scattering noise in polarization-encoded quantum communication channels co-propagating with classical signals using the depolarization channel. Utilizing NetSquid simulations, we validate the model against demonstrations of qubit transmission, entanglement distribution, and teleportation.

Problem

• Modeling Raman scattering noise in quantum communication channels
• Validating noise impact on qubit transmission and entanglement
• Simulating depolarization effects in quantum-classical co-propagation

Innovation

• Modeling Raman scattering noise in quantum channels
• Using depolarization channel for noise simulation
• Validating model with NetSquid simulations