2014/03/14 by Seán M. Meenehan, Meenehan, Sean M., Justin Cohen +11
Chemistry · Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Mechanical and Optical Resonators #Optics (physics.optics) #Quantum Physics (quant-ph) #Thermal Radiation and Cooling Technologies #Thermal properties of materials #thermodynamics and calorimetric analyses
paper · pdf · doi:10.48550/arxiv.1403.3703
openalex publication_date 2014/03/14 · openalex created_date 2022/10/04 · openalex updated_date 2026/07/28
Optical measurements of a nanoscale silicon optomechanical crystal cavity\nwith a mechanical resonance frequency of 3.6GHz are performed at sub-kelvin\ntemperatures. We infer optical-absorption-induced heating and damping of the\nmechanical resonator from measurements of phonon occupancy and motional\nsideband asymmetry. At the lowest probe power and lowest fridge temperature\n(10mK), the localized mechanical resonance is found to couple at a rate of\n400Hz (Q=9x106) to a thermal bath of temperature 270mK. These measurements\nindicate that silicon optomechanical crystals cooled to millikelvin\ntemperatures should be suitable for a variety of experiments involving coherent\ncoupling between photons and phonons at the single quanta level.\n