Rabi oscillations in a stretching molecule.

Area of Science:

• Physical Chemistry
• Quantum Dynamics
• Molecular Physics

Background:

• Rabi oscillation is a fundamental quantum phenomenon typically observed in atoms and solid-state systems.
• Demonstrating Rabi oscillations in molecules, particularly during laser-induced dissociation, is challenging and less explored.
• Understanding molecular dissociation under strong laser fields requires insights into electron-nuclear dynamics.

Purpose of the Study:

• To investigate bond-length-dependent Rabi oscillations in strong laser field dissociation of the hydrogen molecular ion (H₂⁺).
• To explore the influence of varying Rabi frequencies on molecular dissociation dynamics.
• To elucidate the interplay between nuclear motion and electronic Rabi oscillations.

Main Methods:

• Theoretical investigation of strong laser field dissociation of H₂⁺.
• Analysis of bond-length-dependent Rabi oscillations and varying Rabi frequencies.
• Calculation and interpretation of proton kinetic energy spectra.

Main Results:

• Observed bond-length-dependent Rabi oscillations in H₂⁺ dissociation.
• Demonstrated coupling between nuclear stretching and electronic Rabi oscillations.
• Proton kinetic energy spectra revealed complex structures beyond standard theoretical predictions (e.g., Floquet theorem, one-photon dissociation).

Conclusions:

• Laser-driven Rabi oscillations coupled with nuclear motion are critical for understanding molecular bond breaking.
• This study provides a time-resolved perspective on manipulating strong laser field dissociation dynamics in molecules.
• The findings challenge existing models and highlight the importance of considering coupled electron-nuclear dynamics.