Experimental Evidence for Quantum Tunneling Time.

@article{Camus2017ExperimentalEF,
  title={Experimental Evidence for Quantum Tunneling Time.},
  author={Nicolas Camus and Enderalp Yakaboylu and Lutz Fechner and Michael J. Klaiber and Martin Laux and Yonghao Mi and Karen Z. Hatsagortsyan and Thomas Pfeifer and Christoph H. Keitel and Robert Moshammer},
  journal={Physical review letters},
  year={2017},
  volume={119 2},
  pages={
          023201
        }
}
The first hundred attoseconds of the electron dynamics during strong field tunneling ionization are investigated. We quantify theoretically how the electron's classical trajectories in the continuum emerge from the tunneling process and test the results with those achieved in parallel from attoclock measurements. An especially high sensitivity on the tunneling barrier is accomplished here by comparing the momentum distributions of two atomic species of slightly deviating atomic potentials… 

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