Paper published in PRL

Christian's work on optomechanical refrigeration of many vibrational modes of a quantum mechanical resonator via cold-damping feedback has been published in Physical Review Letters.

We consider a standard cold-damping technique and show that low final occupancies are achievable independent of the number of modes adressed by the feedback (as long as the cooling rate is smaller than the intermode frequency separation). These scalings hint towards the design of frequency-resolved mechanical resonators, where efficient refrigeration is possible via simultaneous cold-damping feedback.

Click here for the link to the journal.