Project supported by the National Natural Science Foundation of China (Grant Nos. 60768001 and 10464002)
In the present paper, we investigate the behavior of two-dimensional atom localization in a five-level M-scheme atomic system driven by two orthogonal standing-wave fields. We find that the precision and resolution of...
supported by the National Natural Science Foundation of China (Grant Nos.60768001 and 10464002)
This paper intends to realize negative refraction with absorption suppressed by the electromagnetically induced transparency (EIT) in a dense four-level atomic system.Without the two equal transition frequencies respo...
supported by the National Natural Science Foundation of China (Grant Nos. 60768001 and 10464002)
A closed four-level system in atomic vapour is proposed, which is made to possess left handedness by using the technique of quantum coherence. The density matrix method is utilized in view of the rotating-wave approxi...
Project supported by the National Natural Science Foundation of China (Grant Nos. 60768001 and 10464002)
This paper suggests a scheme of electromagnetic chirality-induced negative refraction utilizing magneto-lectric cross coupling in a four-level atomic system. The negative refraction can be achieved with the two chiral...
Project supported by the National Natural Science Foundation of China (Grant Nos. 60768001 and 10464002)
In this paper we have investigated three external fields interacting with the four-level Y-type atomic system described by the density-matrix approach. The results show that left-handedness with zero absorption is ach...