Room-temperature quantum optomechanics using an ultralow noise cavity.

ABSTRACT: At room temperature, mechanical motion driven by the quantum backaction of light has been observed only in pioneering experiments in which an optical restoring force controls the oscillator stiffness^1,2. For solid-state mechanical resonators in which oscillations are controlled by the material rigidity, the observation of these effects has been hindered by low mechanical quality factors, optical cavity frequency fluctuations³, thermal intermodulation noise^4,5 and photothermal instabilities. Here we overcome these challenges with a phononic-engineered membrane-in-the-middle system. By using phononic-crystal-patterned cavity mirrors, we reduce the cavity frequency noise by more than 700-fold. In this ultralow noise cavity, we insert a membrane resonator with

SUBMITTER: Huang G 

PROVIDER: S-EPMC10866701 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature