Heat engine with trapped ions

by Prof. Kilian Singer (University of Kassel)

Thursday 3 Nov 2022, 15:00 → 16:30 Europe/Zurich

Thermodynamic machines can be reduced to the ultimate atomic limit [1], using a single ion as a working agent. The confinement in a linear Paul trap with tapered geometry allows for coupling axial and radial modes of oscillation.The heat-engine is driven thermally by coupling it alternately to hot and cold reservoirs, using the output power of the engine to drive a harmonic oscillation.From direct measurements of the ion dynamics, the thermodynamic cycles for various temperature differences of the reservoirs can be determined and the efficiency compared with analytical estimates. I will describe how the engine principle can be exploited to implement a differential probe for non-classical baths [2].

 

[1] J. Rossnagel et al., "A single-atom heat engine", Science 352, 325(2016).

[2] A. Levy, M. Göb, B. Deng, K. Singer, E. Torrontegui and D.Wang "Single-atom heat engine as a sensitive thermal probe.", New Journal of Physics, 22, 093020 (2020)

 

To participate in this seminar, check this link

https://us04web.zoom.us/j/932734874