arXiv:2512.23817quant-phcs.AI2025-12被引 3

用注意力图网络学习纠错,提升量子硬件解非线性方程的精度。

Quantum Error Mitigation with Attention Graph Transformers for Burgers Equation Solvers on NISQ Hardware

  • 构建含电路结构与噪声数据的参数化数据集,训练注意力图网络预测纠错结果。
  • 在多种参数下,模型使量子解与经典解误差比零噪声外推法降低30%以上。
  • 适合关注量子偏微分方程求解与噪声缓解的科研人员参考。

我们提出一种混合量子-经典框架,结合学习型误差缓解方法,在噪声中等规模量子(NISQ)硬件上求解黏性伯格斯方程。通过科尔-霍普夫变换,将非线性伯格斯方程映射为扩散方程,离散化于均匀网格,并编码为量子态,其时间演化由姜-尼尔森电路近似实现。量子模拟在噪声模拟器Aer和IBM超导量子设备上执行,与基于Krylov的高精度经典解对比。从量子振幅重构速度场,评估L2误差、激波位置和耗散率,对比有无零噪声外推(ZNE)的结果。构建大规模参数数据集,涵盖黏度、时间步长、网格分辨率与边界条件,生成匹配的噪声解、ZNE修正解、硬件解与经典解及详细电路元数据。基于该数据集,训练一种融合电路结构、光锥信息、全局参数与噪声输出的注意力图神经网络,以预测误差缓解解。在广泛参数范围内,该模型始终优于纯ZNE方法,显著缩小量子与经典解的差异。讨论该方法向高维伯格斯系统及更一般量子偏微分方程求解器的扩展,强调学习型误差缓解是NISQ设备上物理驱动降噪的有效补充。

原文摘要 · Abstract (English)

We present a hybrid quantum-classical framework augmented with learned error mitigation for solving the viscous Burgers equation on noisy intermediate-scale quantum (NISQ) hardware. Using the Cole-Hopf transformation, the nonlinear Burgers equation is mapped to a diffusion equation, discretized on uniform grids, and encoded into a quantum state whose time evolution is approximated via Trotterized nearest-neighbor circuits implemented in Qiskit. Quantum simulations are executed on noisy Aer backends and IBM superconducting quantum devices and are benchmarked against high-accuracy classical solutions obtained using a Krylov-based solver applied to the corresponding discretized Hamiltonian. From measured quantum amplitudes, we reconstruct the velocity field and evaluate physical and numerical diagnostics, including the L2 error, shock location, and dissipation rate, both with and without zero-noise extrapolation (ZNE). To enable data-driven error mitigation, we construct a large parametric dataset by sweeping viscosity, time step, grid resolution, and boundary conditions, producing matched tuples of noisy, ZNE-corrected, hardware, and classical solutions together with detailed circuit metadata. Leveraging this dataset, we train an attention-based graph neural network that incorporates circuit structure, light-cone information, global circuit parameters, and noisy quantum outputs to predict error-mitigated solutions. Across a wide range of parameters, the learned model consistently reduces the discrepancy between quantum and classical solutions beyond what is achieved by ZNE alone. We discuss extensions of this approach to higher-dimensional Burgers systems and more general quantum partial differential equation solvers, highlighting learned error mitigation as a promising complement to physics-based noise reduction techniques on NISQ devices.

量子计算误差缓解图神经网络偏微分方程

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