Matches in SemOpenAlex for { <https://semopenalex.org/work/W4327744161> ?p ?o ?g. }
- W4327744161 abstract "Quantum heat engines are expected to outperform the classical counterparts due to quantum coherences involved. Here we experimentally execute a single-ion quantum heat engine and demonstrate, for the first time, the dynamics and the enhanced performance of the heat engine originating from the Liouvillian exceptional points (LEPs). In addition to the topological effects related to LEPs, we focus on thermodynamic effects, which can be understood by the Landau-Zener-Stuckelberg process under decoherence. We witness a positive net work from the quantum heat engine if the heat engine cycle dynamically encircles a LEP. Further investigation reveals that a larger net work is done when the system is operated closer to the LEP. We attribute the enhanced performance of the quantum heat engine to the Landau-Zener-Stuckelberg process, enabled by the eigenenergy landscape in the vicinity of the LEP, and the exceptional point-induced topological transition. Therefore, our results open new possibilities toward LEP-enabled control of quantum heat engines and of thermodynamic processes in open quantum systems." @default.
- W4327744161 created "2023-03-18" @default.
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- W4327744161 date "2023-03-17" @default.
- W4327744161 modified "2023-10-16" @default.
- W4327744161 title "Enhancement of Quantum Heat Engine by Encircling a Liouvillian Exceptional Point" @default.
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- W4327744161 doi "https://doi.org/10.1103/physrevlett.130.110402" @default.
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