Single-ion heat engine at maximum power.

  title={Single-ion heat engine at maximum power.},
  author={Obinna Abah and Johannes Ro\ssnagel and Georg Jacob and Sebastian Deffner and Ferdinand Schmidt-Kaler and Kilian Singer and Eric Lutz},
  journal={Physical review letters},
  volume={109 20},
We propose an experimental scheme to realize a nanoheat engine with a single ion. An Otto cycle may be implemented by confining the ion in a linear Paul trap with tapered geometry and coupling it to engineered laser reservoirs. The quantum efficiency at maximum power is analytically determined in various regimes. Moreover, Monte Carlo simulations of the engine are performed that demonstrate its feasibility and its ability to operate at a maximum efficiency of 30% under realistic conditions. 
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