Markovian heat engine boosted by quantum coherence

• URL: http://arxiv.org/abs/2505.22902v1
• Date: Wed, 28 May 2025 22:07:56 GMT
• Title: Markovian heat engine boosted by quantum coherence
• Authors: Freddier Cuenca-Montenegro, Marcela Herrera, John H. Reina,
• Abstract summary: We evaluate the role of quantum coherence as a thermodynamic resource in a noisy, Markovian one-qubit heat engine.<n>We implement the entire Otto cycle in a quantum circuit, simulating realistic amplitude and phase damping channels.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We evaluate the role of quantum coherence as a thermodynamic resource in a noisy, Markovian one-qubit heat engine. We demonstrate that, when operating according to a quantum Otto cycle, can surpass the classical efficiency limit by consuming the coherence of noisy quantum states. Computed Leggett-Garg temporal correlations imply the engine's non-classical nature. Amplitude damping significantly reduces efficiency and extractable work. In contrast, phase damping has no significant impact on the extractable work. We implement the entire Otto cycle in a quantum circuit, simulating realistic amplitude and phase damping channels, as well as gate-level noise. We introduce an operational measure of the circuit's thermodynamic cost, establishing a direct link between energy consumption and information processing in quantum heat engines.

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