Coherence manipulation in asymmetry and thermodynamics

• URL: http://arxiv.org/abs/2308.12814v2
• Date: Tue, 21 May 2024 18:16:25 GMT
• Title: Coherence manipulation in asymmetry and thermodynamics
• Authors: Tulja Varun Kondra, Ray Ganardi, Alexander Streltsov,
• Abstract summary: In the classical regime, thermodynamic state transformations are governed by the free energy. In the quantum regime, coherence and free energy are two independent resources. We show that allowing along with a source of free energy allows us to amplify any quantum coherence present in the quantum state arbitrarily.
• Score: 44.99833362998488
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In the classical regime, thermodynamic state transformations are governed by the free energy. This is also called as the second law of thermodynamics. Previous works showed that, access to a catalytic system allows us to restore the second law in the quantum regime when we ignore coherence. However, in the quantum regime, coherence and free energy are two independent resources. Therefore, coherence places additional non-trivial restrictions on the the state transformations, that remains elusive. In order to close this gap, we isolate and study the nature of coherence, i.e.\ we assume access to a source of free energy. We show that allowing catalysis along with a source of free energy allows us to amplify any quantum coherence present in the quantum state arbitrarily. Additionally, any correlations between the system and the catalyst can be suppressed arbitrarily. Therefore, our results provide a key step in formulating a fully general law of quantum thermodynamics.

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