Experimental Demonstration of Quantum Effects in the Operation of Microscopic Heat Engines.

Autor: Klatzow J; Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom., Becker JN; Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom., Ledingham PM; Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom., Weinzetl C; Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom., Kaczmarek KT; Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.; Groupe de Physique Appliquée, Université de Genéve, CH-1211 Genéve, Switzerland., Saunders DJ; Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom., Nunn J; Centre for Photonics and Photonic Materials, Department of Physics, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom., Walmsley IA; Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom., Uzdin R; Fritz Haber Research Center for Molecular Dynamics, Hebrew University of Jerusalem, Jerusalem 9190401, Israel., Poem E; Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 7610001, Israel.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2019 Mar 22; Vol. 122 (11), pp. 110601.
DOI: 10.1103/PhysRevLett.122.110601
Abstrakt: The ability of the internal states of a working fluid to be in a coherent superposition is one of the basic properties of a quantum heat engine. It was recently predicted that in the regime of small engine action, this ability can enable a quantum heat engine to produce more power than any equivalent classical heat engine. It was also predicted that in the same regime, the presence of such internal coherence causes different types of quantum heat engines to become thermodynamically equivalent. Here, we use an ensemble of nitrogen vacancy centers in diamond for implementing two types of quantum heat engines, and experimentally observe both effects.
Databáze: MEDLINE
Externí odkaz: