laboratory for integrated nano-quantum systems

Stanford University, Department of Applied Physics, Ginzton Lab

Posted on March 9, 2017

Raphael’s paper on thermal brillouin scattering is published.

Here we observe for the first time the scattering of optical photons by the gigahertz Brownian motion of a nanoscale silicon waveguide. We find that about 1 photon per 100 million collides with a thermal phonon, in agreement with newly developed models for the optomechanical interaction. These measurements simplify the characterization of mechanical motion of nanoscale waveguides and show that thermal noise needs to be suppressed when using these waveguides for quantum optics.