Electromagnetically Induced Transparency In Solids With The Slower Group Velocity

The effect termed electromagnetically induced transparency (EIT) is an induced transparency in an initially absorbing medium, experienced by a weak-probe field, due to the presence of a strong-coupling field on a linked transition. This technique has been used to slow light and optical data storage, which have potential applications in quantum information processing and quantum calculation.By the support of the National Nature Science Found ofChina(NO:10074020), The EIT and SGV of Pr3+:Y2SiO5 and Eu3+:Y2SiO5 crystals were investigated. The semi-classical theory about the interaction of light and matter was introduced in detail. The density matrix equations about the interaction of light and matter were deduced and the first-order approximate solution were solved. Against the two specific crystals the EIT and SGV of theΛmodel of three-level system were discussed. The effect of laser linewidth, the inhomogeneous linewidth of the spin energy level and the concentration of ions doped on EIT were discussed and some important results were obtained. The manipulating of EIT and SGV by the radio-frequency field was investigated and the way of getting the multi-windows EIT and SGV was obtained.The experiment setup of EIT and SGV are designed. The two important parameters (homogeneous and inhomogeneous linewidth) for EIT and SGV were measured. By substituting the experiment parameters into theory formulas, the EIT and SGV of Pr3+:Y2SiO5 were calculated. The theoretical calculation and the experimental results were coincidence well.Compared with the gas material the solid material are easier to make device and more usful in quantum computation and quantum information.