标题： 变分量子算法用于非马尔可夫量子动力学 显示英文标题

标题： Variational quantum algorithm for non-Markovian quantum dynamics

摘要： 非马尔可夫量子动力学的模拟在理解凝聚相环境中的电荷和激子动力学中起着重要作用，但其在经典计算机上仍然计算成本高昂。 我们开发了一种变分量子算法，能够模拟非马尔可夫量子动力学。 该算法通过在路径积分公式中使用埃伦费斯特定迹，并对热分布进行蒙特卡洛采样来捕捉非马尔可夫效应。 我们在量子模拟器上用自旋-玻色模型测试了该算法，结果与精确结果吻合良好。 该算法自然适合NISQ设备的并行计算平台，且非常适合非谐振系统-环境相互作用和多态系统。 显示英文摘要

摘要： The simulation of non-Markovian quantum dynamics plays an important role in the understanding of charge and exciton dynamics in the condensed phase environment, and yet it remains computationally expensive on classical computers. We have developed a variational quantum algorithm that is capable of simulating non-Markovian quantum dynamics. The algorithm captures the non-Markovian effect by employing the Ehrenfect trajectories in the path integral formulation and the Monte Carlo sampling of the thermal distribution. We tested the algorithm with the spin-boson model on the quantum simulator and the results match well with the exact ones. The algorithm naturally fits into the parallel computing platform of the NISQ devices and is well suited for anharmonic system-bath interactions and multi-state systems.