研究目的
Investigating the use of an optomechanical system for temperature metrology by detecting the ballistic transport of thermal excitations from a remote bath.
研究成果
The study demonstrates the use of an optomechanical system for temperature metrology by detecting thermal excitations from a remote bath. It highlights the potential for creating an acoustic analog of non-contact infrared thermometry and for coupling multiple optical and mechanical systems via acoustic and optical channels for quantum networks.
研究不足
The study is limited by the sensitivity of the optical detection system and the effects of localized heating from absorbed probe light.
1：Experimental Design and Method Selection:
The study involves optically probing SiN membrane nanomechanical resonator modes strongly coupled to acoustic radiation into the substrate.
2：Sample Selection and Data Sources:
High-stress Si3N4 nanomechanical membrane resonators are used, with acoustic absorbers placed on the supporting substrate.
3：List of Experimental Equipment and Materials:
The setup includes a Michelson interferometer or an optical lever detection via a split photodetector, and recently, an optomechanical coupling scheme involving an optical nanofiber.
4：Experimental Procedures and Operational Workflow:
The experiment involves heating acoustic absorbers with laser pulses and observing the thermal noise and frequency shifts in membrane modes.
5：Data Analysis Methods:
The analysis includes observing the spectral height of membrane modes and the effects of heating on mode temperatures.
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