Affiliation:
1. Shanxi University
2. Universidad de Concepción
3. CIFAR
4. University of Maryland
5. National Institute of Standards and Technology
Abstract
We report three orders of magnitude optical cooling of the fundamental torsional mode of a 5 mm long, 550 nm diameter optical nanofiber. The rotation of the nanofiber couples to the polarization of guided laser fields. We use a weak laser probe to monitor the rotation and use feedback to modulate the polarization of an auxiliary drive laser providing torque. Our results present a tool for the optomechanical control of large-scale torsional resonators, with metrological applications and potential implications for studying macroscopic objects in quantum states.
Funder
National Key Research and Development Program of China
FONDECYT
CONICYT-PAI
111 Project
“1331 KSC”, PCSIRT
Fundamental Research Program of Shanxi Province, China
National Natural Science Foundation of China
Subject
Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
2 articles.
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