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Related Experiment Video

Updated: Sep 13, 2025

Optical Trap Loading of Dielectric Microparticles In Air

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Published on: February 5, 2017

Confinement-Induced Resonances in Spherical Shell Traps.

C Moritz Carmesin¹, Maxim A Efremov^1,2

¹Universität Ulm, Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), 89081 Ulm, Germany.

Physical Review Letters

|July 31, 2025

Summary

This summary is machine-generated.

Researchers computed the energy spectrum of two interacting bosonic particles in a shell trap. They identified confinement-induced resonances, offering a new way to control atom-atom interactions by tuning the shell

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Area of Science:

Atomic, molecular and optical physics.
Quantum mechanics.
Condensed matter physics.

Background:

Two-body problem in quantum mechanics.
Interacting bosonic particles.
Confined quantum systems.

Purpose of the Study:

Compute the energy spectrum and wave functions of two interacting bosonic particles in a spherical shell trap.
Identify confinement-induced resonances.
Explore controlling atom-atom interactions via geometrical parameters.

Main Methods:

Numerical computation of energy spectrum and wave functions.
Analysis of avoided crossings in the energy spectrum.
Investigation of the relative and center-of-mass motions.

Main Results:

Calculated energy spectrum and wave functions for the system.
Identified confinement-induced resonances as avoided crossings.
Demonstrated that resonances arise from strong coupling between relative and center-of-mass motions.

Conclusions:

Confinement-induced resonances provide a mechanism to control atom-atom interactions.
Tuning geometrical parameters of the shell trap allows control over interactions.
This offers a novel approach for manipulating atomic gases.