Science Daily April 7, 2022 In an optical resonator light is reflected between mirrors, and it interacts with the levitated nanoparticle. Such interaction can give rise to dynamical instabilities which are often considered undesirable. An international team of researchers (Austria, Switzerland) has shown how they can be used as a resource. They have shown that by properly controlling these instabilities, the resulting unstable dynamics of a mechanical oscillator inside an optical cavity leads to mechanical squeezing. They applied this approach to a silica nanoparticle coupled to a microcavity via coherent scattering. The new protocol is robust in the presence of […]
Tag Archives: Optomechanics
The Force of Nothingness Has Been Used to Manipulate Objects
Science Alert August 7, 2020 An international team of researchers (USA – UC Merced, Australia) demonstrates a way to realize a Casimir spring and engineer dilution in macroscopic optomechanics by coupling a metallic SiN membrane to a photonic re-entrant cavity. The attraction of the spatially localized Casimir spring mimics a non-contacting boundary condition giving rise to increased strain and acoustic coherence through dissipation dilution. This provides a way to manipulate phonons via thermal photons leading to ‘in situ’ reconfigurable mechanical states, to reduce loss mechanisms and to create additional types of acoustic nonlinearity—all at room temperature…read more. TECHNICAL ARTICLE