Dispersion Management of Ultraslow Light in a Bose-Einstein Condensate via Trap Curvature

Lensing and Waveguiding of Ultraslow Pulses in an Atomic Bose-Einstein Condensate

We investigate lensing and waveguiding properties of an atomic Bose-Einstein condensate for ultraslow pulse generated by electromagnetically induced transparency method. We show that a significant time delay can be controllably introduced between the lensed and guided components of the ultraslow pulse. In addition, we present how the number of guided modes supported by the condensate and the focal length can be controlled by the trap parameters or temperature.

凹坑势对玻色–爱因斯坦凝聚体中超慢光的影响

Effect of Dimple Potential on Ultraslow Light in a Bose-Einstein Condensate

本文利用 Gross–Pitaevskii 方程分析带凹坑势的谐振陷阱中玻色–爱因斯坦凝聚体的密度分布，揭示深凹坑势可将超慢光脉冲群延迟提升至约 1 ms。

Guiding ultraslow weak-light bullets with Airy beams in a coherent atomic system

We investigate the possibility of guiding stable ultraslow weak-light bullets by using Airy beams in a cold, lifetime-broadened four-level atomic system via electromagnetically induced transparency (EIT). We show that under EIT condition the light bullet with ultraslow propagating velocity and extremely low generation power formed by the balance between diffraction and nonlinearity in the probe field can be not only stabilized but also steered by the assisted field. In particular, when the assisted field is taken to be an Airy beam, the light bullet can be trapped into the main lobe of the Air…

Laser pulse amplification and dispersion compensation in an effectively extended optical cavity containing Bose-Einstein condensates

We review and critically evaluate our proposal of a pulse amplification scheme based on two Bose-Einstein condensates inside the resonator of a mode-locked laser. Two condensates are used for compensating the group velocity dispersion. Ultraslow light propagation through the condensate leads to a considerable increase in the cavity round-trip delay time, lowers the effective repetition rate of the laser, and hence scales up the output pulse energy. It has been recently argued that atom-atom interactions would make our proposal even more efficient. However, neither in our original proposal nor …