• Corpus ID: 215768601

Nonlinear Response of a Quantum System to Impulsive Perturbations: A Non-Perturbative Real-Time Approach

@article{Guandalini2020NonlinearRO,
  title={Nonlinear Response of a Quantum System to Impulsive Perturbations: A Non-Perturbative Real-Time Approach},
  author={Alberto Guandalini and Caterina Cocchi and Stefano Pittalis and Alice Ruini and Carlo Andrea Rozzi},
  journal={arXiv: Chemical Physics},
  year={2020}
}
We argue that real-time propagation of quantum states as induced by instantaneous electrical impulses can be an ideal computational tool for investigating nonlinear optical properties of many-electron systems especially when, as in the case of optical limiting, the relevant nonlinearities are not restricted to wave mixing at a predefined order. We demonstrate the capabilities of this methodology through an application to a one-dimensional model system. We show that the Fourier transform of the… 
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