Mechanical feedback in the high-frequency limit

2008/02/29 by R. El Boubsi, R El Boubsi, O. Usmani +3
Physics and Astronomy · #Mechanical and Optical Resonators #Quantum and electron transport phenomena #Topological Materials and Phenomena #cond-mat.mes-hall

paper · pdf · doi:10.1088/1367-2630/10/9/095011

10 pages, written for the Focus Issue of New J. Phys. on "Mechanical Systems at the Quantum Limit", ed. by Markus Aspelmeyer and Keith Schwab

arxiv created 2008/02/29 · openalex publication_date 2008/09/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

We investigate strong mechanical feedback for a single electron tunneling (SET) device coupled to an underdamped harmonic oscillator in the high-frequency case, when the mechanical energy of the oscillator exceeds the tunnel rate, and for weak coupling. In the strong feedback regime, the mechanical oscillations generated by the telegraph signal from the SET device in their turn modify the electric current. In contrast to the previously published results for the low frequencies, the current noise is not enhanced above the Poisson value.

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