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Related Experiment Video

Updated: May 13, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

Oscillatory dynamics and non-Markovian memory in dissipative quantum systems.

D M Kennes¹, O Kashuba, M Pletyukhov

¹Institut für Theorie der Statistischen Physik, RWTH Aachen University and JARA-Fundamentals of Future Information Technology, 52056 Aachen, Germany.

Physical Review Letters

|March 26, 2013

Summary

Quantum systems show unique oscillatory dynamics near transitions, differing from classical models. Non-Markovian memory effects are crucial for understanding quantum system evolution after a quantum quench.

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Last Updated: May 13, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor

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An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

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Published on: December 4, 2017

Area of Science:

Quantum mechanics
Statistical physics
Condensed matter theory

Background:

Understanding the dynamics of small quantum systems interacting with their environment is fundamental.
Dissipative environments introduce complexity, leading to phenomena like decoherence and energy loss.
The transition from coherent to incoherent dynamics is a key area of study in open quantum systems.

Purpose of the Study:

To investigate the nonequilibrium dynamics of a small quantum system coupled to a dissipative environment.
To compare the oscillatory dynamics of quantum systems near a coherent-incoherent transition with classical damped harmonic oscillators.
To elucidate the role of non-Markovian memory effects in quantum dynamics after a quantum quench.

Main Methods:

Theoretical modeling of a small quantum system.
Coupling the quantum system to a dissipative environment.
Analyzing the time evolution of the system after a quantum quench.
Employing analytical and numerical techniques to study dynamics.

Main Results:

The oscillatory dynamics near the coherent-to-incoherent transition in quantum systems differ significantly from classical damped harmonic oscillators.
Non-Markovian memory effects are shown to play a prominent role in the system's time evolution post-quantum quench.
The study highlights unique quantum features not present in classical analogues.

Conclusions:

The behavior of quantum systems in dissipative environments exhibits distinct characteristics compared to classical systems.
Non-Markovianity is a critical factor that must be considered for accurate predictions of quantum dynamics.
These findings have implications for quantum information processing and the understanding of quantum thermodynamics.