Southwest Quantum Information and Technology

Optomechanical cooling with time dependent parameters

Presenting Author: Pablo Yanes-Thomas, National Autonomous University of Mexico
Contributing Author(s): Pablo Barberis Blostein

We model the laser cooling of a parametrically driven optomechanical cavity using a dissipation model that takes into account the modification of the quasi-energy spectrum caused by the driving. We construct a master equation for the mechanical object using Floquet operators. When the natural frequency of the mechanical object oscillates periodically around its mean value, we derive, using an adiabatic approximation, an analytical expression for its temperature. This expression depends both on the oscillator's mean frequency and that of the frequency's oscillations around its mean value. We find that the temperature can be lower than in the non-time dependent case. 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 : Thursday from 5:00pm - 7:00 pm)