We are currently setting up a new experiment to push beyond the quantum limits of laser power sensing and stabilization. This research aims to unlock unprecedented laser stability, with direct applications in high-precision experiments such as gravitational-wave detection and the generation of strong bright squeezed light.
Our technique senses the full laser power by observing how light’s radiation pressure moves an ultra-light mirror suspended like a tiny pendulum. The mirror, with a mass of only 100 mg, is suspended by two fused silica fibers thinner than a human hair. When the laser power fluctuates, the radiation pressure of the light imprints a fluctuating momentum in the mirror changing its position. By tracking this motion with extreme precision, we can infer and actively stabilize quantum noise itself. This method will open exciting new directions in precision measurement and quantum optics, and set new records in laser stability!
Team working in this project: Alejandro Munoz (PhD student), Walid Chaibi (CNRS chargé de recherche) and Marina Trad Nery (project leader, CNRS Chair Professor Junior)
A big thanks to the funders of the project ANR, IdEx Université Côte d'Azur, FirstTF, and OCA BQR.
If you are interested on working as a PostDoc or doing your internship in this project, please send an email to marina.trad-nery@oca.eu
