精确的化学反应建模在杂的中间规模量子计算机上,具有积极的基于空间的工作流
Xiongzhi Zeng1, Huili Zhang2, Shizheng Zhang1
1State Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei 230026, China.
The journal of physical chemistry letters
|November 1, 2025
概括
本研究提出了一种高效的量子工作流程,用于化学反应模拟,使用一种新的活性空间选择算法和耐噪声量子电路. 该方法在适度量子资源的反应能量方面实现了高精度.
科学领域:
- 量子计算是一种量子计算.
- 计算化学的计算化学
- 量子模拟的量子模拟
背景情况:
- 噪音中等尺度量子 (NISQ) 硬件需要资源意识的量子模拟协议.
- 精确的化学反应的初始模拟在计算上要求很高.
研究的目的:
- 开发一个高效的量子计算工作流程,用于准确的化学反应模拟.
- 为了解决NISQ硬件对复杂化学问题的局限性.
主要方法:
- 引入了一种新型的活性空间选择算法:多体扩展相关性能量活性空间 (MBECAS).
- 结合的MBECAS与驱动相似性重规范化组 (DSRG) 下折和一个硬件可适应的替代品 (HAA).
- 利用误差缓解技术来提高准确度.
主要成果:
- 在涉及多达几十个原子的反应上验证了MBECAS-DSRG-HAA工作流.
- 在错误减轻后,复制的Diels-Alder反应障碍具有高精度 (在毫哈特里内).
- 证明了使用适度的量子资源实现精确反应能量的能力.
结论:
- 开发的工作流提供了一个资源高效的方法,用于量子化学模拟.
- MBECAS,DSRG和HAA的组合为量子化学提供了一个强大的工具.
- 这种方法显示了扩展到更大的系统和研究激发状态动态的前景.
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