Two-color transparency in a hybrid photothermal cavity system
Quantum Optics Lab, Department of Physics, COMSATS University Islamabad, Islamabad, Pakistan
2 Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi’an Jiaotong University, 710049, Xi’an, China
3 Physics Division, National Tsing-Hua University, 300, Hsinchu, Taiwan
4 Landau Feynman Lab for Theoretical Physics, Department of Physics, CUI Lahore Campus, 54000, Lahore, Pakistan
5 Institute of Theoretical Physics and Astronomy, Vilnius University, Sauletekio 3, 10257, Vilnius, Lithuania
Accepted: 13 July 2022
Published online: 9 August 2022
The photothermal effects can make an optical cavity transparent to a weak probe field when a strong driving field is applied (Ma et al. in Sci. Adv. 6:eaax8256, 2020). This system provides a photothermal analog of the standard (single) electromagnetically induced transparency. Here, we suggest a novel scenario by introducing into the system a qubit (two-level system), which, besides allowing to achieve the two-color (double) transparency, strongly enhances the transparency effects. When the hybrid system is illuminated by a strong coupling field, the output field is shown to experience both sub- and superluminality at different frequencies.
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