arXiv:2511.23224quant-phcs.LG2025-11被引 1

用图神经网络预测量子电路的非稳定化程度,提升量子优势资源评估效率。

Nonstabilizerness Estimation using Graph Neural Networks

  • 基于电路图表示,用图神经网络学习非稳定化特征。
  • 在分类和回归任务中均优于以往方法,尤其对复杂电路泛化能力强。
  • 可融合硬件信息,适用于真实量子设备上的资源预测。

本文提出一种基于图神经网络(GNN)的方法,用于估计量子电路的非稳定化程度,以稳定化瑞尼熵(SRE)为度量。非稳定化是实现量子优势的核心资源,高效估算SRE对实际应用极为有益。研究通过三种监督学习范式解决该问题:从较简单的分类任务逐步过渡到更具挑战性的回归任务。实验表明,所提GNN能有效捕捉电路图表示中的关键特征,在多种场景下表现稳健。在分类任务中,模型在纯态上训练后,可泛化至经克莱夫顿操作演化、纠缠态及高量子比特数的电路;在回归任务中,相较于先前工作,对高量子比特数和门数的分布外电路(包括随机电路与横场伊辛模型生成的结构化电路),显著提升了SRE估算精度。此外,电路的图表示天然集成硬件相关信息,模拟噪声量子硬件的结果显示,该GNN具备预测真实量子设备上测量SRE的潜力。

原文摘要 · Abstract (English)

This article proposes a Graph Neural Network (GNN) approach to estimate nonstabilizerness in quantum circuits, measured by the stabilizer Rényi entropy (SRE). Nonstabilizerness is a fundamental resource for quantum advantage, and efficient SRE estimations are highly beneficial in practical applications. We address the nonstabilizerness estimation problem through three supervised learning formulations starting from easier classification tasks to the more challenging regression task. Experimental results show that the proposed GNN manages to capture meaningful features from the graph-based circuit representation, resulting in robust generalization performances achieved across diverse scenarios. In classification tasks, the GNN is trained on product states and generalizes on circuits evolved under Clifford operations, entangled states, and circuits with higher number of qubits. In the regression task, the GNN significantly improves the SRE estimation on out-of-distribution circuits with higher number of qubits and gate counts compared to previous work, for both unstructured random quantum circuits and structured circuits derived from the transverse-field Ising model. Moreover, the graph representation of quantum circuits naturally integrates hardware-specific information. Simulations on noisy quantum hardware highlight the potential of the proposed GNN to predict the SRE measured on quantum devices.

量子计算图神经网络资源估计

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