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Gradient Echo Quantum Memory in Warm Atomic Vapor

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Published on: November 11, 2013

Dissipation-Assisted Prethermalization in Long-Range Interacting Atomic Ensembles.

Stefan Schütz¹, Simon B Jäger¹, Giovanna Morigi¹

¹Theoretische Physik, Universität des Saarlandes, D-66123 Saarbrücken, Germany.

Physical Review Letters

|September 3, 2016

Summary

This summary is machine-generated.

We found that dissipation significantly extends prethermalization in driven-dissipative atomic systems. This effect, driven by momentum-position correlations, slows down thermalization in long-range interacting many-body systems.

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Area of Science:

Atomic physics
Quantum optics
Condensed matter theory

Background:

Driven-dissipative systems exhibit complex phase transitions.
Long-range interactions and cavity mediation are crucial in atomic ensembles.
Understanding relaxation dynamics after a quantum quench is key.

Purpose of the Study:

To theoretically characterize semiclassical dynamics after a quench across a driven-dissipative phase transition.
To investigate the role of coherent and dissipative long-range forces.
To explore the impact of dissipation on prethermalization and thermalization timescales.

Main Methods:

Semiclassical dynamics simulation.
Theoretical analysis of driven-dissipative systems.
Investigation of long-range interacting many-body systems.

Main Results:

A long prethermalizing behavior dominated first by coherent forces, then by their interplay with dissipation.
Dissipation-assisted prethermalization is orders of magnitude longer than coherent dynamics.
Creation of non-mean-field momentum-position correlations.

Conclusions:

Dissipation substantially slows down thermalization in long-range interacting systems.
Cavity cooling into self-organized phases may require longer experimental timescales.
Noise and dissipation play a critical role in the dynamics of many-body systems.