Ultrahigh-quality-factor micro-and nanomechanical resonators using dissipation dilution

NJ Engelsen, A Beccari, TJ Kippenberg - Nature Nanotechnology, 2024 - nature.com
Mechanical resonators are widely used in sensors, transducers and optomechanical
systems, where mechanical dissipation sets the ultimate limit to performance. Over the past …

High‐Strength Amorphous Silicon Carbide for Nanomechanics

M Xu, D Shin, PM Sberna, R van der Kolk… - Advanced …, 2024 - Wiley Online Library
For decades, mechanical resonators with high sensitivity have been realized using thin‐film
materials under high tensile loads. Although there are remarkable strides in achieving low …

Centimeter-scale nanomechanical resonators with low dissipation

A Cupertino, D Shin, L Guo, PG Steeneken… - Nature …, 2024 - nature.com
High-aspect-ratio mechanical resonators are pivotal in precision sensing, from macroscopic
gravitational wave detectors to nanoscale acoustics. However, fabrication challenges and …

Entanglement-enhanced optomechanical sensor array with application to dark matter searches

AJ Brady, X Chen, Y Xia, J Manley… - Communications …, 2023 - nature.com
Squeezed light has long been used to enhance the precision of a single optomechanical
sensor. An emerging set of proposals seeks to use arrays of optomechanical sensors to …

Thermal intermodulation backaction in a high-cooperativity optomechanical system

CM Pluchar, AR Agrawal, DJ Wilson - Optica, 2023 - opg.optica.org
The pursuit of room temperature quantum optomechanics with tethered nanomechanical
resonators faces stringent challenges owing to extraneous mechanical degrees of freedom …

Ultracoherent Nanomechanical Resonators Based on Density Phononic Crystal Engineering

D Høj, UB Hoff, UL Andersen - Physical Review X, 2024 - APS
Micromechanical and nanomechanical systems with exceptionally low dissipation rates are
enabling the next-generation technologies of ultrasensitive detectors and quantum …

Feedback cooling the fundamental torsional mechanical mode of a tapered optical fiber to 30 mK

F Tebbenjohanns, J Jia, M Antesberger, AS Prasad… - Physical Review A, 2023 - APS
We experimentally study the fundamental torsional mechanical mode of the nanofiber waist
of a tapered optical fiber. We find that this oscillator with a resonance frequency of f= 161.7 …

Laser cooling a 1-milligram torsional pendulum to 240 microkelvins

S Agafonova, P Rossello, M Mekonnen… - arXiv preprint arXiv …, 2024 - arxiv.org
Milligram-scale mechanical oscillators hold potential for testing fundamental physical
phenomena on various fronts, including laboratory-scale effects at the interface of quantum …

Laser cooling a centimeter-scale torsion pendulum

DC Shin, TM Hayward, D Fife, R Menon… - arXiv preprint arXiv …, 2024 - arxiv.org
We laser cool a centimeter-scale torsion pendulum to a temperature of 10 mK (average
occupancy of 6000 phonons) starting from room temperature (equivalent to $2\times 10^ 8 …

Back action evasion in optical lever detection

S Hao, TP Purdy - Optica, 2024 - opg.optica.org
The optical lever is a centuries old and widely used detection technique employed in
applications ranging from consumer products and industrial sensors to precision force …