[ China Instrument Network Instrument Development ] The surface single-molecule chemical physics research group led by Cao Gengyu, a researcher at the Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, and the Chinese Academy of Sciences, the Beijing Institute of Computational Science, Professor Sun Changyi, researcher Li Yong, and researcher at the Institute of Theoretical Physics, Chinese Academy of Sciences In cooperation with the vulgar and the like, new progress has been made in the energy coherent transfer in the micro-nano-cavity system. For the first time, a coherent optical switch based on the dynamic local vibration mode is constructed experimentally, and the coupled mechanical vibrator is realized. Continuous regulation of the full range of energy transfer rates. The relevant research results are published in Physical Review Applied.
Legend: Coherent light switch based on kinetic localized vibration mode. (a) Schematic diagram of the coherent light switch drive. (b) Experimental results of the coherent light switch.
Coupling micro-nano mechanical vibrators have a wide range of applications in precision measurement physics and integrated signal processing devices. Among them, the controllable coupling between the vibrators constitutes the basis of these applications. However, it is still difficult to experimentally achieve a fully controllable coherent transfer of energy between mechanical vibrators. Because this aspect requires full range control of the effective coupling strength of the mechanical vibrator, and on the other hand it is required to always operate at the degeneracy point of the system to obtain the best coherence.
In response to this key scientific problem, Cao Gengyu research team constructed a Landau-Zener- in a cavity-light system based on coupled mechanical vibrators by placing two coupled microcantilever beams into a periodically modulated light potential trap. The Stückelberg interferometer achieves a continuous range of effective coupling strength between the microcantilever beams at the degeneracy point of the system. Studies have shown that the coherent destructive tunneling using vibration can bind the vibration energy to the corresponding microcantilever to achieve the kinetic localization of energy. Experimentally, the coherent optical power switch based on the dynamic local vibration mode is used to successfully realize the coherent opening and closing of the energy transfer between different cantilever beams. This study provides a new method for further research and regulation of the transfer phenomena in artificial lattices based on coupled mechanical vibrators.
The associate researcher paid the number as the first author of the article, Cao Gengyu and Li Yong were the authors of the article. The research work was supported by major research projects of the Ministry of Science and Technology, the National Natural Science Foundation of China and the China Postdoctoral Fund Project.
(Original title: Wuhan Institute of Materials, etc. Progress in energy coherent transfer research in cavity light systems)
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