Led by academician GUO guangcan, the research group of Prof. DONG chunhua has achieved the dissipation control of the optical force interaction through the cascade photon-photo coupling in the optical hybrid system, and meanwhile, enhanced the cooling effect of the optical system. The work related was published in Physical Review Letters.
This coherent light-matter interaction in hybrid system compromised the advantages of different systems, as for that, it leads to a wider application not only in field of quantum interfaces but also nonlinear optics. The more complex the system is, the more interaction between light-matter can achieve.
In this research, the adjustment of the optical mode linewidth helps to wilder the adjustment range to exceed an order of magnitude through coupling the target optical mode with auxiliary high-frequency phonons.
Besides, the decreasing of the linewidth helps to increase the synergy coefficient between the target optical mode and the acoustic mode, and further to enhance the sideband cooling. The synergy coefficient of photons and phonons is vital for valuing the performance of optical hybrid device. It’s believed that this approach can improve the performance of the device.
This work is demonstrated as a promising tool for controlling the interaction in light-matter, for the proposed schema is applicable not only in cascaded photon-phonon interactions but also in the controlling of nonlinear frequency conversion processes and the suppression of Raman lasing.
(a) The dissipative control in a single microsphere resonator. (b) Schematic of the dissipative control via phonon-phonon couplings in a hybrid system consisting of multiple modes.
(Written by ZHANG Liyin, edited by JIANG Pengcen, USTC News Center)