Silicon optomechanical crystal resonator at millikelvin temperatures
- Author(s)
- Sean M. Meenehan, Justin D. Cohen, Simon Gröblacher, Jeff T. Hill, Amir H. Safavi-Naeini, Markus Aspelmeyer, Oskar Painter
- Abstract
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(s)
- Quantum Science
- External organisation(s)
- California Institute of Technology (Caltech)
- Journal
- Physical Review A
- Volume
- 90
- No. of pages
- 5
- ISSN
- 1050-2947
- DOI
- https://doi.org/10.1103/PhysRevA.90.011803
- Publication date
- 07-2014
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103026 Quantum optics
- Keywords
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/9eded0ea-2996-4152-95e4-6cfd86ee44bd