超快激光和超快光谱技术的发展为调控超导、认识超导机理提供了灵活手段。光调控高温超导材料中的复杂物理过程研究已成为凝聚态物理研究的前沿热点。本项目拟从超快动力学出发研究几种层状超导体中超快光调控过程。主要研究体系包括GdTe3,DyTe3,FeSe/SrTiO3和两种单/双层氧化铜超导体。利用含时密度泛函理论结合分子动力学、非线性耦合动力学以及量子蒙特卡洛等处理强关联的方法，系统研究超快激光脉冲作用下，体系中的晶格、电子轨道、自旋、声子之间相互作用与演化过程，获得激光脉冲对电子、声子以及电子-声子耦合、层间相互作用的控制规律。以电子、晶格原子的非平衡动力学过程为主线，用多种理论方法分析序参量的竞争关系，从主动控制的动态演化过程中确定影响超导的主要因素，获得激光调控超导的物理本质。为激光调控超导、大幅提高超导温度提供重要依据。项目的研究成果对于理解高温超导机理及超快激光调控材料性质有重要意义。

The development of ultrafast laser and spectroscopy technology provides a flexible means for regulating superconductivity and understanding superconducting mechanism. The study of complex physical processes in optical controlled high-temperature superconducting materials is a hot research field in condensed matter physics. This project intends to investigate the ultrafast optical regulation process in several layered superconductors based on ultrafast dynamics. The main research systems include GdTe3, DyTe3, FeSe/SrTiO3 and two monolayer/bilayer copper oxide superconductors. By means of time-dependent density functional theory combined with molecular dynamics, nonlinear coupling dynamics, Quantum Monte Carlo and the like methods dealing with strong correlations systems, the interaction and evolution process between the lattice, electron orbit, spin and phonon in the system under ultrafast laser pulses are systematically studied. The control regularity of laser pulse on electron, phonon, electron-phonon coupling, and interlayer interaction is obtained. Taking the non-equilibrium dynamic process of electrons and lattice atoms as the main line, the order parameters competition is analyzed by multifarious theoretical methods, and the main factors affecting superconductivity are clarified from the active controlled dynamic evolution process. Then the physical essence of laser regulated superconductivity is understood, and an important basis for both laser controlled superconductivity and vast increase in superconducting transition temperature is provided. The research results will bring forth useful insights for understanding the high temperature superconductivity mechanism and the properties of ultrafast laser regulated materials.