Atomic media have played a major role in studies of fast light. One of their attractive features
is the ability to manipulate experimental parameters to control the dispersive properties that …

We have experimentally studied the propagation of two optical fields in a dense rubidium
(Rb) gas in the case when an additional microwave field is coupled to the hyperfine levels of …

The group velocity of a light pulse propagating through a four-level system exhibiting
electromagnetically induced transparency can be manipulated by a pump laser. The pump …

We experimentally study the group time delay for a light pulse propagating through hot Rb
87 vapor in the presence of a strong coupling field in a Λ configuration. We demonstrate that …

We propose a model to manipulate group velocity of a multi-frequency probe light in an
electromagnetically induced transparency medium consisting of five-level cascade-type …

We investigate, theoretically and experimentally, the transmission of light through a thermal
vapor of three-level ladder-type atoms, in the presence of two counterpropagating control …

The advent of electromagnetically induced transparency (EIT) offered a new coherent
material with exotic and controllable optical properties. Although, studies on single-EIT are …

We use the superposition of three probes fields to modify the rotatory photon drag by
strength and phases of the applied fields. Subluminal propagation is tuned to superluminal …

We observe transformation of the electromagnetically induced transparency (EIT) resonance
into an absorption resonance in a Λ interaction configuration in a cell filled with Rb 87 and a …

We have theoretically demonstrated an enhanced Fizeau effect due to dragging the light that
occurs when the group velocity of light is ultraslow. The proposed experiment can be done …