标题： 长程能量转移和离子化在超短空间形状激光脉冲驱动的扩展量子系统中 显示英文标题

标题： Long-range Energy Transfer and Ionization in Extended Quantum Systems Driven by Ultrashort Spatially Shaped Laser Pulses

摘要： 在由两个距离较远的氢原子组成的量子系统中，初始核间距为100个原子单位（5.29纳米），通过超越Born-Oppenheimer近似的时变薛定谔方程的数值解研究了电离和能量传递过程。 在此假设中，仅其中一个氢原子在不同激光载波频率下被时间上和空间上整形的激光脉冲激发。 在包含电子的两个z坐标和核间距R的线性三维模型中，研究了扩展的H-H系统的量子动力学，该系统最初要么处于非纠缠态，要么处于纠缠态。发现来自激光激发的氢原子（原子A）到另一个氢原子（原子B）的能量有效传递以及后者的电离现象。 已经表明，能量传递以及原子B电离的物理机制是原子A的激光驱动电子受到原子B质子的库仑吸引，以及当两个电子的波函数在原子B的区域强烈重叠时，它们之间的短程库仑排斥。 显示英文摘要

摘要： The processes of ionization and energy transfer in a quantum system composed of two distant H atoms with an initial internuclear separation of 100 atomic units (5.29 nm) have been studied by the numerical solution of the time-dependent Schr\"odinger equation beyond the Born-Oppenheimer approximation. Thereby it has been assumed that only one of the two H atoms was excited by temporally and spatially shaped laser pulses at various laser carrier frequencies. The quantum dynamics of the extended H-H system, which was taken to be initially either in an unentangled or an entangled ground state, has been explored within a linear three-dimensional model, including two z coordinates of the electrons and the internuclear distance R. An efficient energy transfer from the laser-excited H atom (atom A) to the other H atom (atom B) and the ionization of the latter have been found. It has been shown that the physical mechanisms of the energy transfer as well as of the ionization of atom B are the Coulomb attraction of the laser driven electron of atom A by the proton of atom B and a short-range Coulomb repulsion of the two electrons when their wave functions strongly overlap in the domain of atom B.