Radio-frequency optomechanical characterization of a silicon nitride drum

Pearson, A. N. and Khosla, Kiran and Mergenthaler, M. and Briggs, G. Andrew D. and Laird, Edward and Ares, N. (2020) Radio-frequency optomechanical characterization of a silicon nitride drum. Scientific Reports, 10. ISSN 2045-2322

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Abstract

On-chip actuation and readout of mechanical motion is key to characterize mechanical resonators and exploit them for new applications. We capacitively couple a silicon nitride membrane to an off resonant radio-frequency cavity formed by a lumped element circuit. Despite a low cavity quality factor (QE ≈ 7.4) and off resonant, room temperature operation, we are able to parametrize several mechanical modes and estimate their optomechanical coupling strengths. This enables real-time measurements of the membrane’s driven motion and fast characterization without requiring a superconducting cavity, thereby eliminating the need for cryogenic cooling. Finally, we observe optomechanically induced transparency and absorption, crucial for a number of applications including sensitive metrology, ground state cooling of mechanical motion and slowing of light.

Item Type:
Journal Article
Journal or Publication Title:
Scientific Reports
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1000
Subjects:
ID Code:
141241
Deposited By:
Deposited On:
10 Feb 2020 09:50
Refereed?:
Yes
Published?:
Published
Last Modified:
29 Mar 2020 06:59