Details

Autor(en) / Beteiligte

• Yuan, Mingyun
• Cohen, Martijn A.
• Steele, Gary A.

Titel

Silicon nitride membrane resonators at millikelvin temperatures with quality factors exceeding 108

Ist Teil von

• Applied physics letters, 2015-12, Vol.107 (26)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2015

Quelle

American Institute of Physics (AIP) Journals

Beschreibungen/Notizen

• We study the mechanical dissipation of the fundamental mode of millimeter-sized, high quality-factor (Q) metalized silicon nitride membranes at temperatures down to 14 mK using a three-dimensional optomechanical cavity. Below 200 mK, high-Q modes of the membranes show a diverging increase of Q with decreasing temperature, reaching Q=1.27×108 at 14 mK, an order of magnitude higher than that reported before. The ultra-low dissipation makes the membranes highly attractive for the study of optomechanics in the quantum regime, as well as for other applications of optomechanics such as microwave to optical photon conversion.