Tuesday, February 8, 2011
talk by Dan Brooks
He is talking about a microchip trap coupled to a cavity with an optomechanical hamiltonian containing both linear and quadratic couplings of photon and atomic COM. The detuning is about 20 MHz from the cavity resonance, with coupling parameters of order unity (small mass and Young's modulus). In linear coupling regime, the OM power intensity shows a dip when the trap is filled, due to so-called ponderomotive squeezing. The oscillations in the COM motion include a lot of mode excitations and likely the bath mode has frequency dependence.