Micropillar Resonators for Optomechanics in the Extremely High 19–95-GHz Frequency Range

ANGUIANO, S.; BRUCHHAUSEN, A. E.; JUSSERAND, B.; FAVERO, I.; LAMBERTI, F. R.; LANCO, L.; SAGNES, I.; LEMAÎTRE, A.; LANZILLOTTI-KIMURA, N. D.; SENELLART, P.; FAINSTEIN, A.

PHYSICAL REVIEW LETTERS

AMER PHYSICAL SOC

Año: 2017 vol. 118

0031-9007

Strong confinement, in all dimensions, and high mechanical frequencies are highly desirable for quantum optomechanical applications. We show that GaAs/AlAs micropillar cavities fully confine not only photons but also extremely high frequency (19?95 GHz) acoustic phonons. A strong increase of the optomechanical coupling upon reducing the pillar size is observed, together with record room-temperature Q-frequency products of 10**14. These mechanical resonators can integrate quantum emitters or polariton condensates, opening exciting perspectives at the interface with nonlinear and quantum optics.