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arXiv 1811.04069quant-ph
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分子振动的数字量子模拟

Digital quantum simulation of molecular vibrations

Sam McArdle, Alex Mayorov, Xiao Shan, Simon Benjamin, Xiao Yuan

摘要:

分子振动是光谱性质、能量转移和分子键合等重要现象的基础。然而,获得对即使是小分子的振动结构的详细理解在计算上是昂贵的。虽然有几种算法可以有效地解决量子计算机上的电子结构问题,但相对而言,很少有人关注用量子硬件解决振动结构问题。在这项工作中,我们讨论了使用量子算法调查分子的静态和动态振动特性。我们引入了一个物理动机的幺正振动耦合集群ananimals,这也使得我们的方法可以访问嘈杂的,近期的量子硬件。我们数值测试我们的水和二氧化硫分子的建议。

英文摘要:

Molecular vibrations underpin important phenomena such as spectral properties, energy transfer, and molecular bonding. However, obtaining a detailed understanding of the vibrational structure of even small molecules is computationally expensive. While several algorithms exist for efficiently solving the electronic structure problem on a quantum computer, there has been comparatively little attention devoted to solving the vibrational structure problem with quantum hardware. In this work, we discuss the use of quantum algorithms for investigating both the static and dynamic vibrational properties of molecules. We introduce a physically motivated unitary vibrational coupled cluster ansatz, which also makes our method accessible to noisy, near-term quantum hardware. We numerically test our proposals for the water and sulfur dioxide molecules.

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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