Attaining Carnot efficiency with quantum and nanoscale heat engines
| Autor: | Manabendra Nath Bera, Mohit Lal Bera, Maciej Lewenstein |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Work (thermodynamics)
Atomic Physics (physics.atom-ph) Computer Networks and Communications QC1-999 FOS: Physical sciences 01 natural sciences 7. Clean energy 010305 fluids & plasmas Physics - Atomic Physics symbols.namesake Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Thermal Computer Science (miscellaneous) 010306 general physics Process engineering Quantum Condensed Matter - Statistical Mechanics Mathematical Physics Heat engine Physics Quantum Physics Statistical Mechanics (cond-mat.stat-mech) Condensed Matter - Mesoscale and Nanoscale Physics business.industry Energy conversion efficiency Statistical and Nonlinear Physics Mathematical Physics (math-ph) QA75.5-76.95 Computational Theory and Mathematics Electronic computers. Computer science symbols Quantum Physics (quant-ph) business Carnot cycle |
| Zdroj: | npj Quantum Information, Vol 7, Iss 1, Pp 1-7 (2021) npj Quantum Information |
| ISSN: | 2056-6387 |
| Popis: | A heat engine operating in the one-shot finite-size regime, where systems composed of a small number of quantum particles interact with hot and cold baths and are restricted to one-shot measurements, delivers fluctuating work. Further, engines with lesser fluctuation produce a lesser amount of deterministic work. Hence, the heat-to-work conversion efficiency stays well below the Carnot efficiency. Here we overcome this limitation and attain Carnot efficiency in the one-shot finite-size regime, where the engines allow the working systems to simultaneously interact with two baths via the semi-local thermal operations and reversibly operate in a one-step cycle. These engines are superior to the ones considered earlier in work extraction efficiency, and, even, are capable of converting heat into work by exclusively utilizing inter-system correlations. We formulate a resource theory for quantum heat engines to prove the results. Accepted for publication in npj Quantum Information (2021) |
| Databáze: | OpenAIRE |
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