With a combination of numerical methods, including quantum Monte Carlo, exact diagonalization, and a simplified dynamical mean-field model, we consider the attosecond charge dynamics of electrons induced by strong-field laser pulses in two-dimensional Mott insulators. The necessity to go beyond single-particle approaches in these strongly correlated systems has made the simulation of two-dimensional extended materials challenging, and we contrast their resulting high-harmonic emission with more widely studied one-dimensional analogues. As well as considering the photo-induced breakdown of the Mott insulating state and magnetic order, we also resolve the time and ultra-high-frequency domains of emission, which are used to characterize both the photo-transition, and the sub-cycle structure of the electron dynamics. This extends simulation capabilities and understanding of the photo-melting of these Mott insulators in two dimensions, at the frontier of attosecond non-equilibrium science of correlated materials.

结合数值方法，包括量子蒙特卡罗、精确对角化和简化的动态平均场模型，我们考虑了二维莫特绝缘体中强场激光脉冲引起的电子的阿秒电荷动力学。在这些强相关系统中超越单粒子方法的必要性使得二维扩展材料的模拟具有挑战性，我们将它们产生的高谐波发射与更广泛研究的一维类似物进行了对比。除了考虑莫特绝缘态和磁序的光致击穿外，我们还解决了发射的时域和超高频域，用于表征光跃迁和亚周期结构电子动力学。