https://doi.org/10.1140/epjst/e2018-800065-2
Review
Ground state cooling of nanomechanical resonators by electron transport
1
Zukunftskolleg, Universität Konstanz,
78457 Konstanz, Germany
2
Fachbereich Physik, Universität Konstanz,
78457 Konstanz, Germany
a e-mail: gianluca.rastelli@uni-konstanz.de
Received:
16
April
2018
Received in final form:
8
September
2018
Published online: 24 January 2019
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.
© EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature, 2019
