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Related Experiment Video

Updated: Feb 10, 2026

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

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Published on: March 30, 2017

Rydberg Molecules for Ion-Atom Scattering in the Ultracold Regime.

T Schmid¹, C Veit¹, N Zuber¹

¹5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.

Physical Review Letters

|May 15, 2018

Summary

This summary is machine-generated.

This study introduces a new method using Rydberg molecules to explore ultracold quantum ion-atom collisions. This technique allows experimental determination of ion-atom scattering length for lithium systems.

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Area of Science:

Atomic, Molecular, and Optical Physics
Quantum Chemistry
Chemical Physics

Background:

Ion-atom collisions are typically studied in the classical regime.
Investigating these collisions in the ultracold, quantum regime presents significant experimental challenges.

Purpose of the Study:

To propose a novel experimental method for studying ion-atom collisions in the ultracold, quantum regime.
To demonstrate the feasibility of this method using the lithium ion-atom system.

Main Methods:

Utilizing Rydberg molecules to initialize ultracold ion-atom scattering events.
Performing ab initio calculations to determine interaction potentials and predict scattering length bounds.
Simulating the evolution of Rydberg molecule wave functions after photoionization in the presence of scattering potentials.

Main Results:

Predicted bounds for the ion-atom scattering length for lithium systems.
Demonstrated experimental determination of scattering length from scattered wave packet velocity (Li-Li) or molecular ion fraction (Li-Li).

Conclusions:

The proposed Rydberg molecule method enables the investigation of ultracold quantum ion-atom scattering.
This technique is adaptable to various ion-atom systems beyond lithium.