High-resolution collision energy control through ion position modulation in atom-ion hybrid systems

Area of Science:

• Atomic, Molecular, and Optical (AMO) Physics
• Chemical Physics
• Quantum Information Science

Background:

• Precise control over collision energies is crucial for fundamental studies in atomic and molecular physics.
• Existing methods for controlling atom-ion collision energies often lack the required resolution and range.
• Radio-frequency (RF) traps and magneto-optical atom traps are standard tools in AMO physics.

Purpose of the Study:

• To demonstrate a novel ion shuttling technique for high-resolution control of atom-ion collision energy.
• To experimentally validate the technique and compare its performance with numerical simulations.
• To explore the potential applications of this technique in chemical physics and molecular ion studies.

Main Methods:

• An ion is held within a radio-frequency trap and translated through a magneto-optical atom trap.
• The technique involves precise control over the ion's kinetic energy during translation.
• Experimental measurements and numerical simulations are used to characterize the energy control.

Main Results:

• Experimental results show control of ion kinetic energies from 0.05 K to 1 K with a fractional resolution of approximately 10.
• Numerical simulations predict kinetic energy control up to 120 K with a maximum resolution of approximately 100.
• The technique offers order-of-magnitude improvements in energy control compared to existing methods.

Conclusions:

• The ion shuttling technique provides unprecedented high-resolution control over atom-ion collision energies.
• This method has significant potential for advancing the study of fundamental atomic and molecular processes.
• Proof-of-principle chemistry experiments demonstrate the technique's utility for molecular ion research.