We realize a phase-sensitive closed-loop control scheme to engineer the fluctuations of the pump field which drives an optomechanical system and show that the corresponding cooling dynamics can be significantly improved. In particular, operating in the counterintuitive “antisquashing” regime of positive feedback and increased field fluctuations, sideband cooling of a nanomechanical membrane within an optical cavity can be improved by 7.5 dB with respect to the case without feedback. Close to the quantum regime of reduced thermal noise, such feedback-controlled light would allow going well below the quantum backaction cooling limit.
Enhancing Sideband Cooling by Feedback-Controlled Light
ROSSI, MASSIMILIANO;KRALJ, NENAD;ZIPPILLI, STEFANO;NATALI, Riccardo;DI GIUSEPPE, Giovanni;VITALI, David
2017-01-01
Abstract
We realize a phase-sensitive closed-loop control scheme to engineer the fluctuations of the pump field which drives an optomechanical system and show that the corresponding cooling dynamics can be significantly improved. In particular, operating in the counterintuitive “antisquashing” regime of positive feedback and increased field fluctuations, sideband cooling of a nanomechanical membrane within an optical cavity can be improved by 7.5 dB with respect to the case without feedback. Close to the quantum regime of reduced thermal noise, such feedback-controlled light would allow going well below the quantum backaction cooling limit.File | Dimensione | Formato | |
---|---|---|---|
Rossi_Enhancing Sideband Cooling by Feedback-Controlled Light_2017.pdf
accesso aperto
Tipologia:
Versione Editoriale
Licenza:
DRM non definito
Dimensione
962.1 kB
Formato
Adobe PDF
|
962.1 kB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.