Squeezed light in integrated structures

2 10/2014

Thursday, 02 Oct. 2014, 14:00 - 15:00

Presenter: Ulrich B. Hoff; Department of Physics, Technical University of Denmark
Host: M. Aspelmeyer
Where: Schrödingerroom, 4th floor, Boltzmanngasse 5, 1090 Wien


In the first part of this talk I will present experimental work on application of squeezed light in cavity optomechanics, demonstrating a quantum-enhanced mechanical transduction sensitivity -0.72(±0.01) dB below the shot noise level by probing the mechanical vibrations of a toroidal microcavity with seeded phase-squeezed vacuum.Secondly, I will present on-going work aiming at generation of quadrature squeezed light via χ(3)-interaction in integrated silicon nitride (Si3N4) racetrack resonators. Focus will be on device design through numerical simulations, covering a novel strategy for improved fiber-chip coupling, and estimation of the achievable squeezing efficiency. Finally, I will present the current experimental status of the project and the challenges we are facing.

Squeezed light in integrated structures

Coupling to silicon nitride chip with 20 racetrack resonators.