Quantum Optical Control of Micromechanical Resonators

Autor(en)

Simon Gröblacher, Michael Vanner, Alexey Trubarov, Garrett Cole, Nikolai Kiesel, Markus Aspelmeyer

Abstrakt

Optomechanical interactions in high-finesse cavities offer a new promising route for the ongoing experimental efforts to achieve and to control the quantum regime of massive mechanical systems using the available toolbox of quantum optics. For example, they allow to cool mechanical degrees of freedom of movable mirrors via radiation-pressure backaction, in principle even into their quantum ground state. Ground-state cooling will eventually require to realize the scheme in a cryogenic environment. We have taken this next step and realized stable operation of a high-finesse cavity inside a 4He cryostat . This allowed us to show radiation- pressure laser cooling of a micro-mechanical kHz resonator from a base temperature of 5 K to approximately 1.3 mK, which corresponds to a thermal occupation factor of = 32 plusmn 4 . Heating effects, e.g. due to absorption of photons in the micromirror, could not be observed. The cooling performance is only limited by the thermal coupling to the environment, which can be further reduced by improving the mechanical quality factor of the mechanical resonator and by further reducing the environmental temperature. The paper discusses the relevance of these results for the preparation and control of mechanical quantum states.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Journal

Unknown Journal

Seiten

1-1

Anzahl der Seiten

1

DOI

https://doi.org/10.1109/CLEOE-EQEC.2009.5191549

Publikationsdatum

2009

Peer-reviewed

Ja

ÖFOS 2012

103026 Quantenoptik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/edfc0ce4-a696-448a-85c8-a394df843621