通过操作者交换性选开发一个紧的Ansatz:分子系统的数字量子模拟
Dibyendu Mondal1, Dipanjali Halder1, Sonaldeep Halder1
1Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
The Journal of chemical physics
|July 5, 2023
概括
这项研究引入了一种新的量子算法来模拟许多费米子系统. 解的Ansatz构建协议减少了量子电路深度,提高了近期量子硬件的准确性.
科学领域:
- 量子信息科学 量子信息科学
- 量子计算是一种量子计算.
- 计算化学计算化学
背景情况:
- 量子信息的进步需要有效的量子算法来研究许多费米子系统.
- 变量量子eigenensolver对于杂的中等尺度量子 (NISQ) 设备是最佳的,但需要紧的 Ansätze.
- 开发物理可实现的,低深度的量子电路对于量子模拟至关重要.
研究的目的:
- 开发一种新的量子算法,用于确定许多费米子系统的能量和特性.
- 用适合NISQ硬件的低深度量子电路创建紧的Ansätze.
- 提高量子模拟在杂环境中的准确性和弹性.
主要方法:
- 在单元合集群框架内开发一个解的Ansatz构建协议.
- 使用一体和两体集群运算符和二级散射器来动态定制最佳的 Ansätze.
- 使用能源分类和操作者交换性预先选的平行建筑的潜力.
主要成果:
- 量子电路深度显著减少,用于模拟分子强相关性.
- 证明了动态Ansatz建设协议的高精度.
- 在近期量子硬件固有的噪音条件下表现出弹性.
结论:
- 开发的协议为复杂的费米离子系统的准确和高效的量子模拟提供了一个有希望的方法.
- 这种方法解决了NISQ设备上当前量子算法的局限性.
- 该协议为更强大的量子化学和材料科学应用铺平了道路.
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