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arXiv 2409.09012quant-phcs.DScs.ETcs.NAmath.NA
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更优解概率度量:优化QAOA以超越其热启动解

The Better Solution Probability Metric: Optimizing QAOA to Outperform its Warm-Start Solution

Sean Feeney, Reuben Tate, Stephan Eidenbenz

AI总结:

针对热启动QAOA传统参数优化无法超越初始经典解的问题,提出更优解概率(BSP)优化目标,实验证明其优化后的热启动QAOA能以非零概率找到优于经典热启动的解,为QAOA优化及量子优势探索提供支撑。

摘要:

本文对Tate等人[1]提出的热启动量子近似优化算法(Warm-Start Quantum Approximate Optimization Algorithm, QAOA)开展数值模拟研究,重点关注其在3-正则Max-Cut问题中的应用。研究表明,在不同倾斜角下,热启动QAOA的近似比始终优于理论下界,凸显其在最坏情况预测之外的实际场景潜力。尽管有这些提升,采用针对期望值优化的传统参数的热启动QAOA,性能并未超过初始经典解。为解决该问题,我们提出一种替代参数优化目标——更优解概率(Better Solution Probability, BSP)度量。结果显示,经BSP优化的热启动QAOA能在非平凡倾斜角下,以非零概率找到甚至优于经典方法得到的最佳热启动解的解。这些发现凸显了理论与实证分析对完善QAOA、探索其量子优势潜力的重要性。

英文摘要:

This paper presents a numerical simulation investigation of the Warm-Start Quantum Approximate Optimization Algorithm (QAOA) as proposed by Tate et al. [1], focusing on its application to 3-regular Max-Cut problems. Our study demonstrates that Warm-Start QAOA consistently outperforms theoretical lower bounds on approximation ratios across various tilt angles, highlighting its potential in practical scenarios beyond worst-case predictions. Despite these improvements, Warm-Start QAOA with traditional parameters optimized for expectation value does not exceed the performance of the initial classical solution. To address this, we introduce an alternative parameter optimization objective, the Better Solution Probability (BSP) metric. Our results show that BSP-optimized Warm-Start QAOA identifies solutions at non-trivial tilt angles that are better than even the best classically found warm-start solutions with non-vanishing probabilities. These findings underscore the importance of both theoretical and empirical analyses in refining QAOA and exploring its potential for quantum advantage.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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