Inouye S, Low RF, Gupta S, Pfau T, Gorlitz A, Gustavson TL, Pritchard DE, Ketterle W
Department of Physics and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Phys Rev Lett. 2000 Nov 13;85(20):4225-8. doi: 10.1103/PhysRevLett.85.4225.
A Bose-Einstein condensate illuminated by a single off-resonant laser beam ("dressed condensate") shows a high gain for matter waves and light. We have characterized the optical and atom-optical properties of the dressed condensate by injecting light or atoms, illuminating the key role of long-lived matter wave gratings produced by the condensate at rest and recoiling atoms. The narrow bandwidth for optical gain gave rise to an extremely slow group velocity of an amplified light pulse ( approximately 1 m/s).
由单个非共振激光束照射的玻色-爱因斯坦凝聚体（“修饰凝聚体”）对物质波和光表现出高增益。我们通过注入光或原子来表征修饰凝聚体的光学和原子光学特性，阐明了静止凝聚体和反冲原子产生的长寿命物质波光栅的关键作用。光学增益的窄带宽导致放大光脉冲的群速度极慢（约1米/秒）。
