Structured leakage in OAM-encoded qubits revealed by distributed quantum feature extraction
Yayu Mo Nazifa Rumman Sanjeev Shapkota Thomas A. Searles Sanjaya Lohani
作者信息
Abstract
Orbital angular momentum (OAM) modes have emerged as an important platform for high-dimensional quantum communication but remain vulnerable to environmental noise and channel imperfections. Here we introduce a logical-qubit representation of OAM propagation in which modes evolve as qubits through noisy quantum channels. In this representation, turbulence manifests as leakage from the logical OAM subspace into turbulence-induced leakage components, providing a unified description of degradation in both single-photon and coherent-beam regimes. We show that turbulence-induced leakage exhibits systematic dependence on turbulence strength and OAM order, revealing structured signatures of information redistribution beyond the logical subspace. Leveraging this insight, we develop a distributed quantum feature-extraction scheme that encodes high-dimensional OAM states into quantum representations and employs quantum convolutional operations to extract turbulence-robust features. Simulations and experimental measurements demonstrate robust extraction of these features across a broad range of turbulence strengths, OAM orders, and propagation conditions. Our results establish a direct link between OAM-channel dynamics, structured leakage, and quantum learning, providing a physics-informed framework for characterizing turbulence-degraded high-dimensional optical states and extracting robust signatures of turbulence-induced information redistribution.引用本文复制引用
Yayu Mo,Nazifa Rumman,Sanjeev Shapkota,Thomas A. Searles,Sanjaya Lohani.Structured leakage in OAM-encoded qubits revealed by distributed quantum feature extraction[EB/OL].(2026-10-07)[2026-10-12].https://arxiv.org/abs/2610.11001.学科分类
物理学
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