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Quantum Thermodynamics

A single-atom heat engine

arXiv
Authors: Johannes Roßnagel, Samuel Thomas Dawkins, Karl Nicolas Tolazzi, Obinna Abah, Eric Lutz, Ferdinand Schmidt-Kaler, Kilian Singer

Year

2015

Paper ID

26734

Status

Preprint

Abstract Read

~2 min

Abstract Words

105

Citations

N/A

Abstract

We report the experimental realization of a single-atom heat engine. An ion is confined in a linear Paul trap with tapered geometry and driven thermally by coupling it alternately to hot and cold reservoirs. The output power of the engine is used to drive a harmonic oscillation. From direct measurements of the ion dynamics, we determine the thermodynamic cycles for various temperature differences of the reservoirs. We use these cycles to evaluate power P and efficiency η of the engine, obtaining up to P=342 yJ and η=0.28 \%, consistent with analytical estimations. Our results demonstrate that thermal machines can be reduced to the ultimate limit of single atoms.

Why This Paper Matters

  • This paper contributes to the Quantum Thermodynamics research area in the Quantum Articles archive.
  • It adds a 2015 reference point for readers tracking recent quantum research.
  • We report the experimental realization of a single-atom heat engine.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1510.03681 [2] arXiv https://arxiv.org/abs/1510.03681 [3] Publisher https://arxiv.org/abs/1510.03681

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