Observation of Vibrational Dynamics of Orientated Rydberg-Atom-Ion Molecules

Area of Science:

• Atomic, Molecular, and Optical Physics
• Chemical Physics
• Quantum Chemistry

Background:

• Conventional molecular vibrations occur on picosecond timescales.
• Ultralong-range Rydberg molecules possess exceptionally large bond lengths (micrometers), leading to dramatically slowed dynamics.
• Rydberg-atom-ion molecules represent a novel class of these exotic systems.

Purpose of the Study:

• To directly observe and characterize the vibrational dynamics of Rydberg-atom-ion molecules.
• To investigate the influence of external electric fields on the orientation and dynamics of these molecules.
• To demonstrate control over molecular dynamics in Rydberg systems.

Main Methods:

• Photoassociation of Rydberg atoms to form Rydberg-atom-ion molecules.
• Application of weak external electric fields (mV/cm) to control molecular orientation.
• Controlled quenching of the electric field to induce vibrational dynamics.
• High-resolution ion microscopy for real-space detection of molecular orientation and temporal dynamics.

Main Results:

• Direct observation of vibrational dynamics in Rydberg-atom-ion molecules.
• Demonstration of electric-field-induced control over molecular orientation.
• Evidence of electric-field-induced vibrational dynamics.
• Real-space imaging of molecular orientation and temporal evolution.

Conclusions:

• Vibrational dynamics in Rydberg-atom-ion molecules can be directly observed and controlled.
• External electric fields provide a powerful tool for manipulating Rydberg molecule behavior.
• This work paves the way for controlling molecular dynamics in complex Rydberg systems.