电路的经典模拟与现实的奇数维的Gottsman-Kitaev-Preskill状态
Cameron Calcluth1, Oliver Hahn1,2, Juani Bermejo-Vega3
1Chalmers University of Technology, Department of Microtechnology and Nanoscience (MC2), SE-412 96 Göteborg, Sweden.
Physical review letters
|July 31, 2025
概括
我们开发了一种新的算法,使用Gottsman-Kitaev-Preskill (GKP) 状态高效模拟量子电路. 这种方法显著降低了模拟玻色子量子代码的计算成本,即使使用高压缩.
科学领域:
- 量子计算是一种量子计算.
- 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:
- 量子电路的经典模拟在计算上是昂贵的,特别是对于具有许多能量水平的玻色子代码.
- 模拟具有无限能量水平的量子系统是一个重大挑战.
- 戈特斯曼-基塔耶夫-普雷斯基尔 (GKP) 状态对于在玻色子系统中编码量子信息至关重要.
研究的目的:
- 提出一个高效的算法来模拟用编码的GKP状态模拟量子电路.
- 为了特别解决奇数维编码量子位的模拟.
- 为了优化模拟在高,有限的压缩在代码单词状态的实际相关的制度.
主要方法:
- 利用Zak-Gross Wigner函数来表示无限挤压的编码稳定器状态.
- 开发一个运行时间与维格纳函数的负面性相扩展的算法.
- 专注于涉及输入稳定器GKP状态的电路,通用GKP编码的Clifford运算和模块化测量.
主要成果:
- 该算法能够高效地模拟具有高压缩GKP状态的大型电路.
- 对于12 dB的挤压,最多1000个模式的电路可以与单模式模拟相比,以最小的样本增加进行模拟.
- 这对现有的量子电路模拟器来说是一个显著的改进.
结论:
- 拟议的算法为模拟玻色子量子代码提供了一种计算效率高的方法.
- 这种方法对于使用玻色子代码的早期量子计算架构进行基准测试具有相当大的潜力.
- 这种方法对于高度挤压的GKP国家特别有效.
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