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Atomic Double Ionization with Quantum Light.

Haoyu Liu1, Hanxu Zhang1, Xu Wang1,2

  • 1Graduate School, China Academy of Engineering Physics, Beijing 100193, China.

Physical Review Letters
|April 11, 2025
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Summary
This summary is machine-generated.

New quantum light states enable high-intensity nonlinear atomic responses. This study reveals how quantum light influences atomic double ionization, altering ionization probability and electron momentum.

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Area of Science:

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

Background:

  • High-intensity light can induce nonlinear responses in atoms.
  • Quantum light, specifically noncoherent quantum states, is now achievable at intensities suitable for strong-field atomic physics.
  • Atomic double ionization is a key process in strong-field atomic physics.

Purpose of the Study:

  • To explore the influence of quantum states of light on atomic double ionization.
  • To develop a theoretical framework for modeling the interaction between two-electron atoms and light in arbitrary quantum states.
  • To investigate the impact of quantum light on ionization probability and electron momentum distribution.

Main Methods:

  • Development of a theoretical framework to model atom-light interactions.
  • Simulation of interactions involving two-electron atoms and light in various quantum states (e.g., phase-squeezed coherent states, bright squeezed vacuum states).

Main Results:

  • Quantum states of light significantly affect the atomic double ionization process.
  • Substantial changes in ionization probability were observed due to the quantum nature of light.
  • Correlated electron momentum distributions are notably altered by the quantum state of light.

Conclusions:

  • The quantum state of light plays a crucial role in strong-field atomic double ionization.
  • Theoretical framework provides insights into quantum light-atom interactions.
  • Findings open new avenues for controlling atomic processes with tailored quantum light.