Silicon optomechanical crystal resonator at millikelvin temperatures

Autor(en)

Sean M. Meenehan, Justin D. Cohen, Simon Gröblacher, Jeff T. Hill, Amir H. Safavi-Naeini, Markus Aspelmeyer, Oskar Painter

Abstrakt

Optical measurements of a nanoscale silicon optomechanical crystal cavity with a mechanical resonance frequency of 3.6

GHz are performed at subkelvin temperatures. We infer

optical-absorption-induced heating and damping of the mechanical

resonator from measurements of phonon occupancy and motional sideband

asymmetry. At the lowest probe power and lowest fridge temperature (Tf=10 mK), the localized mechanical resonance is found to couple at a rate of γi/2π=400 Hz (Qm=9×106) to a thermal bath of temperature Tb≈270

mK. These measurements indicate that silicon optomechanical crystals

cooled to millikelvin temperatures should be suitable for a variety of

experiments involving coherent coupling between photons and phonons at

the single quanta level.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

California Institute of Technology (Caltech)

Journal

Physical Review A

Band

90

Anzahl der Seiten

5

ISSN

1050-2947

DOI

https://doi.org/10.1103/PhysRevA.90.011803

Publikationsdatum

07-2014

Peer-reviewed

Ja

ÖFOS 2012

103026 Quantenoptik

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/9eded0ea-2996-4152-95e4-6cfd86ee44bd