Torsional optomechanical cooling of a nanofiber

Author:

Su Dianqiang1,Solano Pablo2,Wack Jeffrey D.3,Orozco Luis A.3,Zhao Yanting1ORCID

Affiliation:

1. Shanxi University

2. Universidad de Concepción

3. NIST, University of Maryland

Abstract

We demonstrate the optomechanical cooling of a tapered optical nanofiber by coupling the polarization of light to the mechanical angular momentum of the system. The coupling is enabled by birefringence in the fiber and does not make use of an optical resonator. We find evidence for cooling in the distribution of thermally driven amplitude fluctuations and the noise spectrum of the torsional modes. Our proof-of-principle demonstration shows cavity-less cooling of the torsional degree of freedom of a macroscopically extended nanofiber.

Funder

National Key Research and Development Program of China

National Natural Science Foundation of China

National Natural Science Foundation of China for Excellent Research Team

Shanxi ’1331 Project’ Key Subjects Construction, PCSIRT

111 Project

CONICYT-PAI

Fondo Nacional de Desarrollo Científico y Tecnológico

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials

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