论文标题
Pansatz：基于脉冲的ANSATZ用于变分量子算法
PANSATZ: Pulse-based Ansatz for Variational Quantum Algorithms
论文作者
论文摘要
我们开发并实施了一种基于脉搏的新型ANSATZ，我们称之为Pansatz，以在当今嘈杂的中间尺度量子（NISQ）计算机上更有效，准确地实现变分量子算法（VQA）。我们的方法应用于量子化学。具体而言，使用多个分子的变异量子量化算法，找到与电子构型问题相关的基态能量。我们设法在模拟多个分子和IBM的NISQ设备之一的模拟中实现了化学精度，以$ H_2 $分子在STO-3G的基础上。我们的结果与基于门的ANSATZ进行了比较，并显示出明显的延迟降低 - 最高$ 7 \ times $ horter Ansatz的时间表。我们还表明，这种安萨兹具有对问题所需的纠缠水平的结构适应性。
We develop and implement a novel pulse-based ansatz, which we call PANSATZ, for more efficient and accurate implementations of variational quantum algorithms (VQAs) on today's noisy intermediate-scale quantum (NISQ) computers. Our approach is applied to quantum chemistry. Specifically, finding the ground-state energy associated with the electron configuration problem, using the variational quantum eigensolver (VQE) algorithm for several molecules. We manage to achieve chemical accuracy both in simulation for several molecules and on one of IBM's NISQ devices for the $H_2$ molecule in the STO-3G basis. Our results are compared to a gate-based ansatz and show significant latency reduction - up to $7\times$ shorter ansatz schedules. We also show that this ansatz has structured adaptivity to the entanglement level required by the problem.
