From Event: SPIE Nanoscience + Engineering, 2021
In the optical levitation in vacuum, we proposed a framework to construct arbitrary non-thermodynamic equilibrium steady state based on the energy feedback control. In the experiment, we have realized different non-thermodynamic equilibrium steady states, including a high-quality phonon laser. This work will stimulate the study of different non-thermodynamic equilibriums with optical levitation in vacuum.
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Yu Zheng and Fang-Wen Sun, "High-Q phonon laser based on energy-dependent feedback," Proc. SPIE 11798, Optical Trapping and Optical Micromanipulation XVIII, 117980N (Presented at SPIE Nanoscience + Engineering: 1 August 2021; Published: 1 August 2021); https://doi.org/10.1117/12.2596489.