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Journal of Sichuan Normal University

Double Electromagnetically Induced Single-photon Transparency in a Five-level K-scheme Atomic System

Hou Bang-pin

Published Jan 1, 2007• 0 citations
OpenAlex

Abstract

When the intermediate level in a three-level-scheme atom is coupled to an excited and a ground levels by two control fields,respectively,the atomic system exhibits the phenomenon of double electromagnetically induced single-photon transparency.The absorption spectra are related to the Rabi frequencies of the two control fields and the non-radiative decay rate.

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Double Electromagnetically Induced Two-photon Transparency in a Five-level Atomic System

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Effects of Vacuum-Induced Coherence on Single-and Two-Photon Absorption in a Five-Level K-Type Atomic System

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Journal of Langfang Teachers College•Jan 1, 2011•0 citations
When the intermediate level in a three-level-scheme atom is coupled to an excited and a ground levels by two control fields,respectively,the atomic system exhibits the phenomenon of double electromagnetically induced single-photon transparency.The absorption spectra are related to the Rabi frequencies of the two control fields and the non-radiative decay rate.
In the five-level K-type atomic system, by using another control field to couple the excited level of the coupling transition to the sixth higher excited level, a six-level atomic system is constructed.In this system, the multiple electromagnetically induced two-photon transparency has been investigated. What is more, if choosing the parameters of the control fields properly the triple transparency window will reduce to a double one which means that the multiple electromagnetically induced two-photon transparency can be manipulated in this system. The physical interpretation of these phenomena is given in terms of the dressed states and the dark states.
In the five-level K-type atomic system, by using another control field to couple the excited level of the coupling transition to the sixth higher excited level, a six-level atomic system is constructed. In this system, the multiple electromagnetically induced two-photon transparency has been investigated. What is more, if choosing the parameters of the control fields properly the triple transparency window will reduce to a double one which means that the multiple electromagnetically induced two-photon transparency can be manipulated in this system. The physical interpretation of these phenomena is given in terms of the dressed states and the dark states.
The absorption properties in an inverted-tripod scheme atomic system driven by the coherent fields are investigated by means of the semiclassical theory.The result obtained by means of numerical method indicates that by adjusting the Rabi frequencies of the coherent fields,there appear triple,double,single electromagnetically induced transparency(EIT).In the triple EIT,the location of transparent windows can be controlled by adjusting the detunings for the coherent fields,and changes continuously,i.e.there exist a series of continuous frequencies for the probe field propagating in an atomic medium without absorption in a certain range.Finally,the explanations of these phenomena are given by using the dressed states.