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arXiv 2209.03386quant-ph
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Prog-QAOA:通过经典程序实现资源高效量子优化的框架

Prog-QAOA: Framework for resource-efficient quantum optimization through classical programs

Bence Bakó, Adam Glos, Özlem Salehi, Zoltán Zimborás

AI总结:

提出Prog-QAOA框架,通过将目标函数和约束编译为量子电路而非二进制优化表示,实现资源高效的量子优化,在旅行商问题和最大K割上获得接近最优的电路成本。

摘要:

当前最先进的量子优化算法需要将原始问题表示为二进制优化问题,然后将其转换为适合量子设备的等价成本哈密顿量。分别实现成本哈密顿量的每一项通常会导致高度冗余,显著增加所需资源。相反,我们提出设计用于计算目标函数和验证约束的经典程序,随后将其编译为量子电路,从而消除对二进制优化问题表示的依赖。这产生了量子近似优化算法(QAOA)的一个新变体,我们将其命名为基于程序的QAOA(Prog-QAOA)。我们将这一思想应用于旅行商问题和最大-$K$-割等优化任务,并获得了在所有相关成本度量(如量子比特数、门数和电路深度)方面接近最优的电路。虽然我们仅针对一组特定的典型问题展示了Prog-QAOA的能力,但我们的方法可方便地适用于一般优化问题。

英文摘要:

Current state-of-the-art quantum optimization algorithms require representing the original problem as a binary optimization problem, which is then converted into an equivalent cost Hamiltonian suitable for the quantum device. Implementing each term of the cost Hamiltonian separately often results in high redundancy, significantly increasing the resources required. Instead, we propose to design classical programs for computing the objective function and certifying the constraints, and later compile them to quantum circuits, eliminating the reliance on the binary optimization problem representation. This results in a new variant of the Quantum Approximate Optimization Algorithm (QAOA), which we name the Program-based QAOA (Prog-QAOA). We exploit this idea for optimization tasks like the Travelling Salesman Problem and Max-$K$-Cut and obtain circuits that are near-optimal with respect to all relevant cost measures, e.g., number of qubits, gates, and circuit depth. While we demonstrate the power of Prog-QAOA only for a particular set of paradigmatic problems, our approach is conveniently applicable to generic optimization problems.

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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