An interaction-driven many-particle quantum heat engine and its universal behavior
A quantum heat engine (QHE) based on the interaction driving of a many-particle working medium is introduced. The cycle alternates isochoric heating and cooling strokes with both interaction-driven processes that are simultaneously isochoric and isentropic. When the working substance is conﬁned in a tight waveguide, the efﬁciency of the cycle becomes universal at low temperatures and governed by the ratio of velocities of a Luttinger liquid. We demonstrate the performance of the engine with an...[Show more]
|del Campo, Adolfo
|A quantum heat engine (QHE) based on the interaction driving of a many-particle working medium is introduced. The cycle alternates isochoric heating and cooling strokes with both interaction-driven processes that are simultaneously isochoric and isentropic. When the working substance is conﬁned in a tight waveguide, the efﬁciency of the cycle becomes universal at low temperatures and governed by the ratio of velocities of a Luttinger liquid. We demonstrate the performance of the engine with an interacting Bose gas as a working medium and show that the average work per particle is maximum at criticality. We further discuss a work outcoupling mechanism based on the dependence of the interaction strength on the external spin degrees of freedom.
|Funding support from the John Templeton Foundation, the National Key R&D Program of China No. 2017YFA0304500 and the key NSFC grant No. 11534014 and NSFC grant No. 11874393, is further acknowledged. G.W. was supported by the Zhejiang Provincial Natural Science Foundation Key Project (Grant No. LZ19A050001), by NSF of China (Grant No. 11674283), by the Fundamental Research Funds for the Central Universities (2017QNA3005, 2018QNA3004), by the Zhejiang University 100 Plan, and by the Thousand Young Talents Program of China. Y.-Y.C. was supported by the China Postdoctoral Science Foundation Grant (No. 2019M650145).
|Nature Publishing Group
|© The Author(s) 2019
|NPJ Quantum Information
|Matter waves and particle beams, Phase transitions and critical phenomena, Quantum fluids and solids, Quantum mechanics
|An interaction-driven many-particle quantum heat engine and its universal behavior
|Imported from ARIES
|020601 - Degenerate Quantum Gases and Atom Optics
|Chen, Yang-Yang, Chinese Academy of Sciences
|Watanabe, Gentaro, Zhejiang University
|Yu, Yi-Cong, Chinese Academy of Sciences
|Guan, Xi-Wen, College of Science, The Australian National University
|del Campo, Adolfo, Donostia International Physics Center
|970102 - Expanding Knowledge in the Physical Sciences
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|ANU Research Publications
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