Southwest Quantum Information and Technology

Optomechanical cooling with time dependent parameters

Presenting Author: Pablo Yanes-Thomas, Universidad Nacional Autonoma de Mexico
Contributing Author(s): Pablo Barberis-Blostein, Marc Bienert

We obtain a master equation for a parametrically driven optomechanical cavity using a dissipa- tion model that accounts for the modification of the quasi-energy spectrum caused by the driving when the natural frequency of the mechanical object oscillates periodically around its mean value. The master equation with the improved dissipation model is expressed using Floquet operators. We apply the master equation to model the laser cooling of the mechanical object. Using an adiabatic approximation, an analytical expression for its temperature can be obtained. We find that the temperature can be lower than in the non-time dependent case and includes both time dependent and non time dependent corrections. Our results raise the possibility of achieving lower temperatures for the mechanical object if its natural frequency can be controlled as a function of time.

(Session 5 : Saturday from 5:00pm - 7:00pm)