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arXiv 2107.02789quant-ph
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数字化反绝热量子近似优化算法

Digitized-counterdiabatic quantum approximate optimization algorithm

P. Chandarana, N. N. Hegade, K. Paul, F. Albarrán-Arriagada, E. Solano, A. del Campo, Xi Chen

摘要:

量子近似优化算法(QAOA)已被证明是一种有效的经典量子算法,可以用于求解组合优化问题和多体量子系统的基态。由于QAOA是一种依赖于ansatz的算法,因此总是需要设计更好的优化算法。为此,我们提出了一个数字化版本的QAOA增强通过使用快捷键绝热。具体来说,我们使用一个反绝热(CD)驱动项来设计一个更好的模型,随着哈密顿量和混合项,提高整体性能。我们将我们的数字化反绝热QAOA应用于伊辛模型,经典优化问题和P-自旋模型,表明它在我们研究的所有情况下都优于标准QAOA。

英文摘要:

The quantum approximate optimization algorithm (QAOA) has proved to be an effective classical-quantum algorithm serving multiple purposes, from solving combinatorial optimization problems to finding the ground state of many-body quantum systems. Since QAOA is an ansatz-dependent algorithm, there is always a need to design ansatz for better optimization. To this end, we propose a digitized version of QAOA enhanced via the use of shortcuts to adiabaticity. Specifically, we use a counterdiabatic (CD) driving term to design a better ansatz, along with the Hamiltonian and mixing terms, enhancing the global performance. We apply our digitized-counterdiabatic QAOA to Ising models, classical optimization problems, and the P-spin model, demonstrating that it outperforms standard QAOA in all cases we study.

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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