Light-field control of real and virtual charge carriers.

@article{Boolakee2022LightfieldCO,
  title={Light-field control of real and virtual charge carriers.},
  author={Tobias Boolakee and Christian Heide and Antonio Garz'on-Ram'irez and Heiko B. Weber and Ignacio Franco and Peter Hommelhoff},
  journal={Nature},
  year={2022},
  volume={605 7909},
  pages={
          251-255
        }
}
Light-driven electronic excitation is a cornerstone for energy and information transfer. In the interaction of intense and ultrafast light fields with solids, electrons may be excited irreversibly, or transiently during illumination only. As the transient electron population cannot be observed after the light pulse is gone, it is referred to as virtual, whereas the population that remains excited is called real1-4. Virtual charge carriers have recently been associated with high-harmonic… 

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