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- W3100554597 endingPage "035014" @default.
- W3100554597 startingPage "035014" @default.
- W3100554597 abstract "The theory of quantum thermodynamics predicts fundamental bounds on work extraction from quantum states. As these bounds are derived in a very general and abstract setting, it is unclear how relevant they are in an experimental context, where control is typically limited. Here we address this question by showing that optimal work extraction is possible for a realistic engine. The latter consists of a superconducting circuit, where a LC-resonator is coupled to a Josephson junction. The oscillator state fuels the engine, providing energy absorbed by Cooper pairs, thus producing work in the form of an electrical current against an external voltage bias. We show that this machine can extract the maximal amount of work from all Gaussian and Fock states. Furthermore, we consider work extraction from a continuously stabilized oscillator state. In both scenarios, coherence between energy eigenstates is beneficial, increasing the power output of the machine. This is possible because the phase difference across the Josephson junction provides a phase reference." @default.
- W3100554597 created "2020-11-23" @default.
- W3100554597 creator A5012254890 @default.
- W3100554597 creator A5058660598 @default.
- W3100554597 creator A5080982214 @default.
- W3100554597 creator A5081891438 @default.
- W3100554597 date "2018-06-27" @default.
- W3100554597 modified "2023-10-15" @default.
- W3100554597 title "Optimal work extraction from quantum states by photo-assisted Cooper pair tunneling" @default.
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- W3100554597 doi "https://doi.org/10.1088/2058-9565/aacbf3" @default.
- W3100554597 hasPublicationYear "2018" @default.
- W3100554597 type Work @default.