量子电路新纪录：双量子激发门的 12-CNOT 分解 A 12-CNOT Double Qubit Excitation Gate

精读摘要

研究团队首次给出双量子激发算子的 12-CNOT 分解电路，此前最优为 13-CNOT。新电路在四项指标上全面领先：CNOT 数最低（12 个）、CNOT 深度最低（8 层，约降 27%）、总电路深度最低（15 层，降 25%），仅比此前最少的单量子比特门数（11 个）多了 2 个。更浅的电路意味着更低的错误率和更短的运行时间，对量子化学模拟等应用有实际价值。 Researchers report the first 12-CNOT decomposition of the double qubit excitation operator, improving on the previous 13-CNOT state of the art. The new circuit achieves the lowest CNOT count (12), lowest CNOT depth (8, roughly 27 percent reduction), and lowest total depth (15, 25 percent reduction), at the cost of only 2 extra one-qubit gates. Shallower circuits translate to lower error rates in quantum simulation.