Tunable optomechanically induced transparency and fast-slow light in a loop-coupled optomechanical system
Qinghong Liao(廖庆洪)1,2,†, Xiaoqian Wang(王晓倩)1, Gaoqian He(何高倩)1, and Liangtao Zhou(周良涛)1
1 Department of Electronic Information Engineering, Nanchang University, Nanchang 330031, China; 2 Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Hefei 230601, China
Abstract We theoretically explore the tunability of optomechanically induced transparency (OMIT) phenomenon and fast-slow light effect in a loop-coupled hybrid optomechanical system in which two optical modes are coupled to a common mechanical mode. In the probe output spectrum, we find that the interference phenomena OMIT caused by the optomechanical interactions and the normal mode splitting (NMS) induced by the strong tunnel coupling between the cavities can be observed. We further observe that the tunnel interaction will affect the distance and the heights of the sideband absorption peaks. The results also show that the switch from absorption to amplification can be realized by tuning the driving strength because of the existence of stability condition. Except from modulating the tunnel interaction, the conversion between slow light and fast light also can be achieved by adjusting the optomechanical interaction in the output field. This study may provide a potential application in the fields of high precision measurement and quantum information processing.
(Optical transient phenomena: quantum beats, photon echo, free-induction decay, dephasings and revivals, optical nutation, and self-induced transparency)
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 62061028), the Foundation for Distinguished Young Scientists of Jiangxi Province, China (Grant No. 20162BCB23009), the Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics (Grant No. KF202010), the Interdisciplinary Innovation Fund of Nanchang University (Grant No. 9166-27060003-YB12), and the Open Research Fund Program of the Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education (Grant No. OEIAM202004).
Qinghong Liao(廖庆洪), Xiaoqian Wang(王晓倩), Gaoqian He(何高倩), and Liangtao Zhou(周良涛) Tunable optomechanically induced transparency and fast-slow light in a loop-coupled optomechanical system 2021 Chin. Phys. B 30 094205
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