Thermodynamic state convertibility is determined by qubit cooling and heating

• URL: http://arxiv.org/abs/2301.06048v2
• Date: Tue, 12 Dec 2023 01:48:05 GMT
• Title: Thermodynamic state convertibility is determined by qubit cooling and heating
• Authors: Thomas Theurer, Elia Zanoni, Carlo Maria Scandolo, Gilad Gour
• Abstract summary: We show how athermality can be used to heat and cool other quantum systems that are initially at thermal equilibrium. We then show that the convertibility between quasi-classical resources is fully characterized by their ability to cool and heat qubits.
• Score: 2.9998889086656577
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Thermodynamics plays an important role both in the foundations of physics and in technological applications. An operational perspective adopted in recent years is to formulate it as a quantum resource theory. At the core of this theory is the interconversion between athermality states, i.e., states out of thermal equilibrium. Here, we solve the question how athermality can be used to heat and cool other quantum systems that are initially at thermal equilibrium. We then show that the convertibility between quasi-classical resources (resources that do not exhibit coherence between different energy eigenstates) is fully characterized by their ability to cool and heat qubits, i.e., by two of the most fundamental thermodynamical tasks on the simplest quantum systems.

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