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Strong field physics in open quantum systems.

Neda Boroumand1, Adam Thorpe1, Graeme Bart1

  • 1Department of Physics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada.

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Summary
This summary is machine-generated.

A new strong field model corrects dephasing errors in intense laser physics, revealing new possibilities for ionization control. This approach integrates many-body physics into laser dynamics, enabling novel effects in strong-field and attosecond science.

Keywords:
open quantum systemquantum opticsrelaxation time approximationstrong field physics

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Area of Science:

  • Atomic, Molecular, and Optical Physics
  • Quantum Optics
  • Strong-Field Physics

Background:

  • Dephasing, the loss of phase coherence, is crucial in light-matter interactions.
  • The relaxation time approximation commonly models dephasing but fails in intense laser physics, overestimating ionization.
  • This failure necessitates a more accurate model for strong laser fields.

Purpose of the Study:

  • To develop a corrected strong field model for dephasing in intense laser-matter interactions.
  • To accurately describe ionization dynamics beyond the limitations of the relaxation time approximation.
  • To explore the potential for ionization enhancement and suppression in extreme parameter regimes.

Main Methods:

  • Developed a strong field model representing the many-body environment as a heat bath.
  • Integrated many-body physics into intense laser dynamics with reduced complexity.
  • Analyzed the model's predictions for ionization enhancement and suppression.

Main Results:

  • The new model corrects the overestimation of ionization seen with the relaxation time approximation.
  • Significant ionization enhancement and suppression, by orders of magnitude, are predicted.
  • These effects are achievable in more extreme parameter regimes than previously considered.

Conclusions:

  • The developed strong field model accurately describes dephasing in intense laser physics.
  • It facilitates the integration of many-body effects into laser dynamics with computational efficiency.
  • The model opens avenues for discovering novel phenomena in strong-field physics and attosecond science.