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arXiv · 2509.02353

Boosting Thermodynamic Efficiency with Quantum Coherence of Phaseonium Atoms

Federico Amato·Gerardo Adesso·G. Massimo Palma·Salvatore Lorenzo·Rosario Lo Franco
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Abstract

We present a realistic implementation of a quantum engine powered by a phaseonium gas of coherently prepared three-level atoms -- where quantum coherence acts as a thermodynamic resource. Using a collision model framework for phaseonium-cavity interactions and cavity optomechanics, we construct a full engine cycle based on two non-thermal reservoirs, each characterized by coherence-induced effective temperatures. This configuration enhances the efficiency of a simple optomechanical engine operating beyond standard thermal paradigms. We further address scalability by coupling a second cavity in cascade configuration, where the same phaseonium gas drives both cycles. Our results demonstrate the operational viability of coherence-driven quantum engines and their potential for future thermodynamic applications.

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Federico Amato, Gerardo Adesso, G. Massimo Palma, Salvatore Lorenzo, Rosario Lo Franco. 2025-09-02. Boosting Thermodynamic Efficiency with Quantum Coherence of Phaseonium Atoms. https://arxiv.org/abs/2509.02353

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