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arXiv · 2008.10181

Analog of a quantum heat engine using a single-spin qubit

K. Ono·S. N. Shevchenko·T. Mori·S. Moriyama·Franco Nori
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Abstract

A quantum two-level system with periodically modulated energy splitting could provide a minimal universal quantum heat machine. We present the experimental realization and the theoretical description of such a two-level system as an impurity electron spin in a silicon tunnel field-effect transistor. In the incoherent regime, the system can behave analogously to either an Otto heat engine or a refrigerator. The coherent regime could be described as a superposition of those two regimes, producing specific interference fringes in the observed source-drain current.

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K. Ono, S. N. Shevchenko, T. Mori, S. Moriyama, Franco Nori. 2020-08-24. Analog of a quantum heat engine using a single-spin qubit. https://doi.org/10.1103/physrevlett.125.166802

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