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Related Experiment Video

Updated: May 3, 2026

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Published on: March 30, 2017

Generalized Dicke nonequilibrium dynamics in trapped ions.

Sam Genway¹, Weibin Li¹, Cenap Ates¹

¹School of Physics and Astronomy, The University of Nottingham, Nottingham NG7 2RD, United Kingdom.

Physical Review Letters

|February 4, 2014

Summary

This summary is machine-generated.

We investigate nonequilibrium phases in trapped ions using a generalized Dicke model. This research reveals a complex phase diagram with superradiantlike states and phonon lasing, observable via fluorescence.

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Area of Science:

Quantum physics
Atomic physics
Condensed matter physics

Background:

The Dicke model describes collective phenomena in quantum systems.
Nonequilibrium quantum dynamics are crucial for understanding complex systems.
Trapped ions offer a controllable platform for quantum simulations.

Purpose of the Study:

To investigate nonequilibrium phases in a generalized Dicke model using trapped ions.
To explore the rich dynamical phase diagram of dissipative spins coupled to phonon modes.
To demonstrate the feasibility of in situ probing of these phases via fluorescence.

Main Methods:

Utilizing trapped ions as a quantum simulation platform.
Employing a generalized Dicke model with dissipative spins and phonon modes.
Analyzing fluorescence measurements for in situ phase probing.
Developing a minimal model to capture key physical insights.
Considering experimental realization with Ca+ ions in a Paul trap.

Main Results:

Discovery of a rich dynamical phase diagram.
Observation of superradiantlike regimes.
Identification of dynamical phase coexistence.
Demonstration of phonon-lasing behavior.
Validation that a minimal model captures essential physics.

Conclusions:

Trapped ions provide a powerful platform for studying nonequilibrium quantum phenomena.
The generalized Dicke model in this setting exhibits complex and observable phases.
In situ fluorescence measurements are effective for probing these quantum phases.
Experimental realization with Ca+ ions is feasible for exploring these dynamics.