Abstract
In strong-field physics and attosecond science, intense light induces ultrafast electron dynamics. Such ultrafast dynamics of electrons in matter is at the core of phenomena such as high-harmonic generation, where these dynamics lead to the emission of extreme-ultraviolet bursts with attosecond duration. So far, all ultrafast dynamics of matter were understood to purely originate from the classical vector potential of the driving light, disregarding the influence of the quantum nature of light. Here we show theoretically that the dynamics of matter driven by bright (intense) light significantly depend on the quantum state of the driving light through its quantum noise, which induces an effective photon-statistics force. To provide a unified framework for the analysis and control over such a force, we extend the strong-field approximation theory to account for non-classical driving light. Our quantum strong-field approximation theory shows that in high-harmonic generation, experimentally feasible squeezing of the driving light can shift and shape electronic trajectories and attosecond pulses at the scale of hundreds of attoseconds. Our work presents a new degree of freedom for attosecond spectroscopy, by relying on non-classical electromagnetic fields, and more generally, introduces a direct connection between attosecond science and quantum optics.
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Data availability
The data supporting the findings of this study are available from the corresponding authors upon reasonable request.
Code availability
The code supporting the findings of this study is available from the corresponding authors upon reasonable request.
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Acknowledgements
We thank the Helen Diller Quantum Center for their support. This work was supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (819440-TIMP), and by the Israel Science Foundation (grant no. 1781/18). M.E.T. gratefully acknowledges support from the Council for Higher Education scholarship for excellence in quantum science and technology and the Helen Diller scholarship for excellence in quantum science and technology.
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M.E.T. and O.C. initiated this research. A.G. derived the theory presented in Supplementary Section I. M.E.T., M.B. and A.G. derived the theory in Supplementary Section II. M.E.T. and M.B. derived the theory in Supplementary Sections IIIB and IVA. M.E.T. derived the remaining theory, performed the numerical calculations and wrote the first draft of the paper. The project was supervised by O.C., I.K. and M.K. All authors discussed the results and contributed to the writing of the manuscript.
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Nature Photonics thanks Maciej Lewenstein, Dejan B. Milosevic and the other, anonymous, reviewer(s) for their contribution to the peer review of this work.
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Supplementary Sections I–VII and derivations.
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Even Tzur, M., Birk, M., Gorlach, A. et al. Photon-statistics force in ultrafast electron dynamics. Nat. Photon. 17, 501–509 (2023). https://doi.org/10.1038/s41566-023-01209-w
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DOI: https://doi.org/10.1038/s41566-023-01209-w
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