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Charge-Density Ripples Modulated by Nuclear Quantum Effects in High-Harmonic Generation in Solids.

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Summary
This summary is machine-generated.

Nuclear quantum effects (NQEs) impact ultrafast dynamics. Solid-state high-harmonic generation (HHG) reveals these effects by detecting NQE-driven charge fluctuations through modified harmonic features, enabling all-optical measurement.

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Area of Science:

  • Quantum physics
  • Attosecond science
  • Solid-state physics

Background:

  • Nuclear quantum effects (NQEs) are crucial in physical and chemical phenomena.
  • Their influence on ultrafast dynamics is not well understood.
  • Attosecond processes are key to studying ultrafast dynamics.

Purpose of the Study:

  • To demonstrate solid-state high-harmonic generation (HHG) as a tool for probing NQEs in attosecond processes.
  • To investigate how NQEs modify ultrafast dynamics in HHG.
  • To provide a method for all-optical detection of NQE-driven charge fluctuations.

Main Methods:

  • Utilizing solid-state high-harmonic generation (HHG) spectroscopy.
  • Investigating the role of charge density ripples (CDRs) induced by nuclear quantum delocalization.
  • Analyzing modifications in HHG trajectories and harmonic features.

Main Results:

  • NQEs substantially alter HHG trajectories via NQE-modulated CDRs.
  • The oscillation phase of HHG is shifted by NQEs.
  • Measurable signatures, including emission symmetry and polarization ellipse rotation, are introduced in harmonic features.

Conclusions:

  • Solid-state HHG is a viable platform for studying NQEs in attosecond dynamics.
  • NQEs introduce unique, measurable signatures in HHG, explaining recent experimental findings.
  • This work enables all-optical detection of NQE-driven charge fluctuations using HHG spectroscopy.