Eur. Phys. J. Plus (2021) 136: 255
https://doi.org/10.1140/epjp/s13360-021-01244-y

Regular Article

Efficient generation of stationary light pulses due to coupling between two lower levels

¹ Research Center for Quantum Optics and Quantum Communication, School of Science, Qingdao University of Technology, 266033, Qingdao, China
² Optoelectronic Materials and Technologies Engineering Laboratory of Shandong, College of Mathematical and Physical Sciences, Qingdao University of Science and Technology, 266061, Qingdao, China
³ College of Physics and Communication Electronics, and Center for Quantum Science and Technology, Jiangxi Normal University, 330022, Nanchang, China

^a qth@mail.bnu.edu.cn

Received: 8 September 2020
Accepted: 16 February 2021
Published online: 24 February 2021

Abstract

A double-$\Lambda$ system, the two low levels of which is connected by an additional weak intensity-modulated microwave field as the controlling fields are switched off, is exploited for efficient generation of stationary light pulse (SLP). Analytical and numerical results show that due to the constructive or destructive interference between the introduced microwave field and the atomic spin coherence, the generated SLP and the retrieved signal field can be optimized or degenerated without causing distortion through modulating the intensity and phase of the microwave field.