title: Slow light with integrated gain and large pulse delay.
abstract: We demonstrate slow and stored light in Rb vapor with a combination of desirable features: minimal loss and distortion of the pulse shape, and large fractional delay (>10). This behavior is enabled by (i) a group index that can be controllably varied during light pulse propagation, and (ii) controllable gain integrated into the medium to compensate for pulse loss. Any medium with the above two characteristics should be able to realize similarly high-performance slow light.
authors.affiliation: Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA.
authors.forename: Irina
authors.initials: I
authors.lastname: Novikova
authors.forename: David F
authors.initials: DF
authors.lastname: Phillips
authors.forename: Ronald L
authors.initials: RL
authors.lastname: Walsworth