title: Control of spontaneous emission from a micro-wave driven atomic system.
abstract: We demonstrate coherent control of spontaneous emission from an indirectly coupled transition in a microwave driven four-level atomic system. The transition of concern is not directly coupled by any laser fields, while the ground state is coupled to another ground state by a microwave field. We show that the coupling of the microwave field produces interesting features such as double narrow lines in the emission spectrum. The heights, widths and positions of the emission peaks can be controlled by modifying the Rabi frequency and detuning of the microwave field. We discuss the spectra in the dressed states basis.
authors.affiliation: Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China.
authors.forename: Chun Liang
authors.initials: CL
authors.lastname: Wang
authors.forename: Zhi Hui
authors.initials: ZH
authors.lastname: Kang
authors.forename: Si Cong
authors.initials: SC
authors.lastname: Tian
authors.forename: Jin Hui
authors.initials: JH
authors.lastname: Wu