在NISQ计算机上模拟开放量子系统动力学,使用通用量子主方程
Yuchen Wang1, Ellen Mulvihill2, Zixuan Hu1
1Department of Chemistry, Department of Physics, and Purdue Quantum Science and Engineering Institute, Purdue University, West Lafayette, Indiana 47907, United States.
Journal of chemical theory and computation
|May 26, 2023
概括
我们使用通用量子主方程 (GQME) 开发了一种量子算法,在杂的量子计算机上模拟开放的量子系统. 这种方法准确地模拟了超越传统方法限制的复杂动态.
科学领域:
- 量子计算是一种量子计算.
- 量子动力学 量子动力学是什么?
- 计算物理 计算物理
背景情况:
- 模拟开放量子系统对于理解复杂现象至关重要.
- 像林德布拉德方程这样的现有方法在系统-浴合和马科度方面存在局限性.
- 噪音中等尺度量子计算机 (NISQ) 为量子模拟提供了新的可能性.
研究的目的:
- 在NISQ计算机上模拟开放量子系统动态的新型量子算法.
- 通过使用通用量子主方程 (GQME) 来克服林布拉德方程的局限性.
- 为了能够准确地模拟非马科夫式和强度合的开放量子系统.
主要方法:
- 使用了通用的量子主方程 (GQME) 方法.
- 对于减少密度矩阵的子集的导出运动方程.
- 采用了Sz-Nagy扩张定理,将非单元传播器转换为单元传播器,用于量子电路实现.
- 在旋转玻色子基准模型上验证了算法.
主要成果:
- GQME方法为模拟开放量子系统提供了一种严格的方法.
- 斯 - - 纳吉扩展定理有助于在NISQ硬件上实现复杂动态.
- 量子算法在IBM NISQ计算机上展示了可靠的性能,用于自旋玻色子模型.
- 分析显示了量子电路深度对模拟准确性的影响.
结论:
- 拟议的量子算法有效地模拟了NISQ设备上的开放量子系统动态.
- 这种方法将量子计算的适用性扩展到更复杂的量子系统.
- 该方法为未来量子模拟和计算研究提供了一个有希望的途径.
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