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Related Experiment Video

Updated: Jun 1, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Autonomous modular quantum systems: contextual Jarzynski relations.

Jens Teifel¹, Günter Mahler

¹Institut für Theoretische Physik, Universität Stuttgart, D-70550 Stuttgart, Germany.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|May 24, 2011

Summary

This summary is machine-generated.

Researchers reinterpreted the Jarzynski relation for autonomous quantum systems, allowing local application by defining system-environment contexts. This enables distinguishing heat and work sources within the environment for modular quantum systems.

Related Experiment Videos

Last Updated: Jun 1, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Area of Science:

Quantum Thermodynamics
Statistical Mechanics
Autonomous Quantum Systems

Background:

The Jarzynski relation, a key concept in non-equilibrium statistical mechanics, traditionally applies to macroscopic systems.
Autonomous quantum systems with modular structures present unique challenges for applying thermodynamic relations due to their complex interactions.

Purpose of the Study:

To demonstrate a localized application of the Jarzynski relation for autonomous quantum systems.
To generalize definitions of heat and work to distinguish energy exchange components with the environment.
To identify functional parts of the environment as specific heat or work sources.

Main Methods:

Introduction of contextual definitions by selecting a system of interest versus its environment.
Generalized definitions of heat and work to partition energy exchange.
Analytical derivations and numerical simulations on small multipartite quantum systems.

Main Results:

The Jarzynski relation can be reinterpreted to apply locally within modular autonomous quantum systems.
Specific environmental components were identified as distinct heat or work sources.
Contextual Jarzynski relations were investigated for various combinations of these environmental parts.

Conclusions:

This work provides a novel framework for analyzing energy exchange in localized quantum systems.
The findings offer new insights into the thermodynamics of modular quantum systems and their environments.
The generalized definitions and contextual approach are crucial for understanding quantum thermodynamics in complex systems.