Abstract
We have employed a feedback cooling scheme, which combines high-frequency mixing with digital signal processing. The frequency and damping rate of a 2 MHz micromechanical resonator embedded in a dc SQUID are adjusted with the feedback, and active cooling to a temperature of 14.3 mK is demonstrated. This technique can be applied to GHz resonators and allows for flexible control strategies.
Originalsprache | Englisch |
---|---|
Aufsatznummer | 013113 |
Fachzeitschrift | Applied Physics Letters |
Jahrgang | 99 |
Ausgabenummer | 1 |
DOIs | |
Publikationsstatus | Veröffentlicht - 4 Juli 2011 |
Extern publiziert | Ja |