arXiv:2605.27027cs.LG2026-05

用AI方法解决量子芯片分布式计算中的电路分配问题,提升效率且无需重新训练。

SQARL: A Size-Agnostic Reinforcement Learning approach for Circuit Allocation in Distributed Quantum Architectures

论文配图:SQARL: A Size-Agnostic Reinforcement Learning approach for Circuit Allocation in Distributed Quantum Architectures
图 1 · 摘自论文原文
  • 基于Transformer的灵活架构,可适应任意数量的量子比特和核心
  • 对常见电路的分配成本比传统强化学习方法降低25%~33%
  • 首次让学习型算法接近人工设计启发式方法性能,适合实际量子硬件部署

量子处理器的扩展受退相干和串扰等技术挑战限制。随着量子比特数量增加,干扰导致计算噪声上升。分布式量子计算通过连接多个小型、易管理的量子处理器(核心)来缓解这些问题,但引入了跨核心通信慢且易出错的新挑战。将量子电路分布到核心上以最小化通信开销的问题称为量子比特分配问题。本文提出一种深度学习方法,强调对硬件拓扑的灵活性并超越现有最优性能。当前最优方法为非学习类启发式算法(如匈牙利量子比特分配,HQA)。强化学习方法虽能学习分配策略,但通常缺乏灵活性,硬件配置改变时需重新训练,且性能不及非学习方法。为此,本文提出一种无需重训即可处理任意量子比特与核心数量的Transformer架构。结果表明,训练后的策略持续优于现有强化学习方法,并缩小了强化学习与HQA在主流电路间的差距:对Cuccaro加法器实现33%的分配成本降低,在随机电路上平均降低25%。这表明学习方法可有效匹配人工设计启发式方法的性能,是迈向真实场景应用的关键一步。

原文摘要 · Abstract (English)

The scaling of quantum processors is currently limited by technical challenges such as decoherence and cross-talk. As the number of qubits grows, interference increases the computational noise. Distributed quantum computing addresses these limitations by interconnecting smaller, easier-to-handle quantum processors (cores), but it introduces the challenge of minimizing slow, error-prone inter-core communication. The task of distributing quantum circuits across cores while minimizing communication costs is known as the Qubit Allocation problem. This work focuses on developing a deep learning approach to this problem, emphasizing flexibility to quantum hardware topology and improving state-of-the-art performance. Heuristic and non-learning algorithms, such as the Hungarian Qubit Allocation (HQA), currently represent the state of the art. Reinforcement Learning (RL) approaches leverage learned allocation policies but often lack flexibility, requiring retraining when hardware configurations change, and they fall short of the solution quality achieved by non-learning methods. However, learning mechanisms could outperform human-crafted heuristics. To overcome these limitations, this work proposes a flexible, transformer-based architecture that can handle arbitrary numbers of qubits and cores without retraining. Results show that the trained policy consistently outperforms the previous RL state of the art and narrows the gap between RL and HQA for the most common circuits. It achieves a 33% reduction in allocation cost relative to the HQA for the Cuccaro Adder and 25% on average for random circuits. These findings show that learning-based approaches can effectively match the performance of hand-crafted heuristics, a crucial step towards their application in real-world scenarios.

量子计算强化学习电路分配Transformer

Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品;中文卡片由大模型生成,请以原文为准。