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Coherence Manipulation in Asymmetry and Thermodynamics.

Tulja Varun Kondra1,2, Ray Ganardi2, Alexander Streltsov2,3

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Quantum thermodynamics explores state transformations using free energy. We show that combining free energy with catalysis can amplify quantum coherence and suppress system-catalyst correlations, advancing general quantum thermodynamics laws.

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Area of Science:

  • Quantum thermodynamics
  • Statistical mechanics
  • Quantum information theory

Background:

  • Classical thermodynamics is governed by free energy and the second law.
  • Quantum systems allow for coherence, a resource independent of free energy.
  • Previous work restored the second law in quantum mechanics by ignoring coherence.

Purpose of the Study:

  • To investigate the role of coherence as an independent resource in quantum thermodynamics.
  • To understand the restrictions coherence imposes on quantum state transformations.
  • To develop a more general framework for quantum thermodynamics.

Main Methods:

  • Isolating and analyzing the nature of quantum coherence.
  • Assuming access to a source of free energy alongside a catalytic system.
  • Studying the interplay between free energy, coherence, and catalysis.

Main Results:

  • Quantum coherence can be arbitrarily amplified when free energy and catalysis are available.
  • Correlations between quantum systems and catalysts can be arbitrarily suppressed.
  • Demonstrated a method to overcome limitations imposed by coherence on state transformations.

Conclusions:

  • Coherence acts as a distinct resource in quantum thermodynamics, independent of free energy.
  • The interplay of free energy and catalysis provides a pathway to manipulate quantum coherence.
  • These findings represent a significant step towards a comprehensive theory of quantum thermodynamics.