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Related Experiment Video

Updated: Jun 27, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

Boltzmann-Loschmidt Dispute Reloaded: Quantum 150 Years Later.

Leonardo Ermann¹, Alexei D Chepelianskii², Dima L Shepelyansky³

¹Departamento de Física Teórica, GIyA, Comisión Nacional de Energía Atómica, Av. del Libertador 8250, Buenos Aires 1429, Argentina.

Entropy (Basel, Switzerland)

|June 26, 2026

Summary

This summary is machine-generated.

Quantum systems, unlike classical ones, can reverse their evolution perfectly. This research demonstrates that quantum chaos diffusion in cold atoms can be time-reversed with 100% efficiency, challenging classical physics limitations.

Keywords:

chaos cold atoms quantum chaos time reversal

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Last Updated: Jun 27, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

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Published on: May 30, 2014

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization

Published on: August 6, 2018

Area of Science:

Quantum physics
Statistical mechanics
Atomic physics

Background:

The Boltzmann-Loschmidt dispute questioned time-reversibility in classical statistical mechanics.
Classical atomic motion described by time-reversible equations faces challenges with irreversibility.

Purpose of the Study:

To investigate the time-reversibility of quantum chaos diffusion.
To explore quantum mechanical solutions to the Boltzmann-Loschmidt paradox.
To contrast quantum and classical time-reversibility.

Main Methods:

Analytical calculations of quantum chaos diffusion.
Numerical simulations of cold atoms/ions in harmonic traps and pulsed optical lattices.
Investigating the efficiency of time-reversal for quantum evolution.

Main Results:

Quantum chaos diffusion can be time-reversed with up to 100% efficiency.
This perfect time-reversibility is demonstrated for cold atoms or ions.
Classical evolution exhibits exponentially small errors, breaking time-reversibility.

Conclusions:

Quantum mechanics offers a path to perfect time-reversibility, unlike classical mechanics.
Experimental techniques are available to demonstrate this quantum perspective on the Boltzmann-Loschmidt dispute.
The study highlights fundamental differences between quantum and classical descriptions of chaotic systems.