The DOI matches its Crossref record; 68 of the 68 references it cites were found in a registry or an index.
Experimental Characterization of a Spin Quantum Heat Engine
Open accessAbstract
Developments in the thermodynamics of small quantum systems envisage nonclassical thermal machines. In this scenario, energy fluctuations play a relevant role in the description of irreversibility. We experimentally implement a quantum heat engine based on a spin-1/2 system and nuclear magnetic resonance techniques. Irreversibility at a microscope scale is fully characterized by the assessment of energy fluctuations associated with the work and heat flows. We also investigate the efficiency lag related to the entropy production at finite time. The implemented heat engine operates in a regime where both thermal and quantum fluctuations (associated with transitions among the instantaneous energy eigenstates) are relevant to its description. Performing a quantum Otto cycle at maximum power, the proof-of-concept quantum heat engine is able to reach an efficiency for work extraction (η≈42%) very close to its thermodynamic limit (η=44%).
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Cites
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Single-Molecule Optomechanical Cycle
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Cited by
Irreversible entropy production: From classical to quantum
Landi, G. T., & Paternostro, M. (2021) · Reviews of Modern Physics · doi:10.1103/revmodphys.93.035008 · Cited by 384
Carrion, H. L., Rojas, O., Filgueiras, C., & Rojas, M. (2025) · Annalen der Physik · doi:10.1002/andp.202400200 · Cited by 7
Metadata
- Authors
- Peterson, J. P. S., Batalhão, T. B., Herrera, M., Souza, A. M., Sarthour, R. S., Oliveira, I. S., & Serra, R. M.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2019-12-09
- Volume
- 123
- Issue
- 24
- Pages
- 240601-240601
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2790861264
- Cited by
- 373
- References
- 68
- FWCI
- 20.05
- Type
- journal article
- Language
- en
- Open access
- green
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- Peterson, J. P. S., Batalhão, T. B., Herrera, M., Souza, A. M., Sarthour, R. S., Oliveira, I. S., & Serra, R. M. (2019). Experimental Characterization of a Spin Quantum Heat Engine. Physical Review Letters. https://doi.org/10.1103/physrevlett.123.240601
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