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Hydrogen Molecular Dissociation Driven by Quantum Light.

Xiaoxiao Long1, Peizeng Li1, Yunquan Liu1,2

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|October 25, 2025
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Summary
This summary is machine-generated.

We used quantum squeezed light to control hydrogen molecular ion dissociation. Photon fluctuations precisely tuned molecular dynamics and dissociation pathways, showing quantum light

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Area of Science:

  • Quantum optics
  • Physical chemistry
  • Molecular dynamics

Background:

  • Investigating molecular dissociation dynamics is crucial for understanding chemical reactions.
  • Nonclassical light sources offer new ways to probe and control quantum phenomena.

Purpose of the Study:

  • To explore the dissociation dynamics of hydrogen molecular ions using tailored quantum light.
  • To understand how photon quantum fluctuations influence molecular fragmentation.

Main Methods:

  • Solving the time-dependent Schrödinger equation for molecular systems.
  • Utilizing a driving field composed of coherent and quantum squeezed light.
  • Analyzing kinetic energy release spectra and dissociation channel yields.

Main Results:

  • Quantum fluctuations in squeezed light significantly affect kinetic energy release spectra.
  • Specific dissociation pathways can be selectively enhanced or suppressed by photon statistics and phase uncertainty.
  • Modulation of relative yields between competing dissociation channels observed.

Conclusions:

  • Quantum light serves as a tunable resource for manipulating molecular dynamics.
  • Findings demonstrate the potential of quantum-enhanced interactions in ultrafast chemistry.
  • This research opens new avenues for controlling chemical processes with quantum light.