422 citations · 1.2k across the 10 of their papers we have counts for
10 papers
SiC Cantilevers For Generating Uniaxial Stress
Boyang Jiang, Noah Opondo, Gary Wolfowicz +3
This paper demonstrates the first beam resonators fabricated from bulk high purity semi-insulating 4H Silicon Carbide wafers (HPSI 4H-SiC). Our innovations include: (1) Multi-level…
Optical probing of mechanical loss of a Si_{3}N_{4} membrane below 100 mK
R. Fischer, N. S. Kampel, G. G. T. Assumpção +5
We report on low mechanical loss in a high-stress silicon nitride (Si_{3}N_{4}) membrane at temperatures below 100 mK. We isolate a membrane via a phononic shield formed within a s…
Improving broadband displacement detection with quantum correlations
N. S. Kampel, R. W. Peterson, R. Fischer +5
Interferometers enable ultrasensitive measurement in a wide array of applications from gravitational wave searches to force microscopes. The role of quantum mechanics in the metrol…
Laser cooling of a micromechanical membrane to the quantum backaction limit
R. W. Peterson, T. P. Purdy, N. S. Kampel +4
The radiation pressure of light can act to damp and cool the vibrational motion of a mechanical resonator. In understanding the quantum limits of this cooling, one must consider th…
Optomechanical Raman-Ratio Thermometry
T. P. Purdy, P. -L. Yu, N. S. Kampel +4
The temperature dependence of the asymmetry between Stokes and anti-Stokes Raman scattering can be exploited for self-calibrating, optically-based thermometry. In the context of ca…
Tensile strained membranes for cavity optomechanics
G. D. Cole, P. -L. Yu, C. Gärtner +8
We investigate the optomechanical properties of tensile-strained ternary InGaP nanomembranes grown on GaAs. This material system combines the benefits of highly strained membranes…
A phononic bandgap shield for high-Q membrane microresonators
P. -L. Yu, K. Cicak, N. S. Kampel +4
A phononic crystal can control the acoustic coupling between a resonator and its support structure. We micromachine a phononic bandgap shield for high Q silicon nitride membranes a…
Strong Optomechanical Squeezing of Light
T. P. Purdy, P. -L. Yu, R. W. Peterson +2
We create squeezed light by exploiting the quantum nature of the mechanical interaction between laser light and a membrane mechanical resonator embedded in an optical cavity. The r…
Cavity optomechanics with Si3N4 membranes at cryogenic temperatures
T. P. Purdy, R. W. Peterson, P. -L. Yu +1
We describe a cryogenic cavity-optomechanical system that combines Si3N4 membranes with a mechanically-rigid Fabry-Perot cavity. The extremely high quality-factor frequency product…
Control of Material Damping in High-Q Membrane Microresonators
P. -L. Yu, T. P. Purdy, C. A. Regal
We study the mechanical quality factors of bilayer aluminum/silicon-nitride membranes. By coating ultrahigh-Q Si3N4 membranes with a more lossy metal, we can precisely measure the…