ArticleProceedings of the National Academy of Sciences of the United States of America2018
Two-level masers as heat-to-work converters.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed.
- Operational Constraints in Quantum Otto Engines: Energy-Gap Modulation and Majorization.Entropy (Basel, Switzerland) · 2025Article
- Nonlinear coherent heat machines.Science advances · 2023Article
- Unravelling the non-classicality role in Gaussian heat engines.Scientific reports · 2022Article
- Heat Modulation on Target Thermal Bath via Coherent Auxiliary Bath.Entropy (Basel, Switzerland) · 2021Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Heat engines, which cyclically transform heat into work, are ubiquitous in technology. Lasers and masers may be viewed as heat engines that rely on population inversion or coherence in the active medium. Here we put forward an unconventional paradigm of a remarkably simple and robust electromagnetic heat-powered engine that bears basic differences to any known maser or laser: The proposed device makes use of only one Raman transition and does not rely on population inversion or coherence in its two-level working medium. Nor does it require any coherent driving. The engine can be powered by the ambient temperature difference between the sky and the ground surface. Its autonomous character and "free" power source make this engine conceptually and technologically enticing.
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Registered trials
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