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arXiv · 1907.12397

Ground state cooling of nanomechanical resonators by electron transport

G. Rastelli·W. Belzig
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Abstract

We discuss two theoretical proposals for controlling the nonequilibrium steady state of nanomechanical resonators using quantum electronic transport. Specifically?, we analyse two approaches to achieve the ground-state cooling of the mechanical vibration coupled to a quantum dot embedded between (i) spin-polarised contacts or (ii) a normal metal and a superconducting contact. Assuming a suitable coupling between the vibrational modes and the charge or spin of the electrons in the quantum dot, we show that ground-state cooling of the mechanical oscillator is within the state of the art for suspended carbon nanotube quantum dots operating as electromechanical devices.

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G. Rastelli, W. Belzig. 2019-07-29. Ground state cooling of nanomechanical resonators by electron transport. https://doi.org/10.1140/epjst%2Fe2018-800065-2

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