对于强相关系系统的稀少量子状态准备
César Feniou1,2, Olivier Adjoua1, Baptiste Claudon1,2
1Sorbonne Université, LCT, UMR 7616 CNRS, 75005 Paris, France.
The journal of physical chemistry letters
|March 14, 2024
概括
量子状态准备是量子化学的关键. 叠加-ADAPT-VQE算法显示了近期量子计算应用的最佳性能,特别是强相关系系统.
科学领域:
- 量子化学是一种量子化学.
- 量子信息科学是一种量子信息科学.
- 计算物理学的计算物理.
背景情况:
- 量子计算通过将复杂的波函数编码到量子比特上,为经典量子化学方法的局限性提供了一个潜在的解决方案.
- 将量子比特精确初始化到近似的基本状态对于量子算法的实用性至关重要.
- 量子状态准备方法产生近似的固态,但通常被视为黑子预言.
研究的目的:
- 研究和比较不同的量子状态准备方法,用于强相关系的系统的基本状态.
- 以电路深度和经典复杂性来评估这些方法的性能.
- 确定最适合近期量子计算应用的算法.
主要方法:
- 使用Hyperion-1 GPU加速状态向量模拟器进行模拟.
- 研究了对高达28量子比特的原型强相关系系统的量子状态准备.
- 对比了各种变量和非变量量子状态准备算法.
主要成果:
- 与其他方法相比,重叠-ADAPT-VQE算法表现出卓越的性能.
- 评估了不同算法的电路深度和经典计算成本之间的权衡.
- 成功模拟了对需要高达28个量子比特的系统的量子状态准备.
结论:
- 叠加-ADAPT-VQE算法是近期量子计算中量子状态准备的一个非常有前途的方法.
- 有效的量子状态准备对于推进量子化学模拟至关重要.
- 这项研究为强相关系系统的量子算法的实际实施提供了宝贵的见解.
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