Ultraslow Optical Solitons in a Coupled Double Quantum-Well Nanostructure

作者：Hao Xiang Ying^*; Liu Ji Bing; Lue Xin You; Song Pei Jun; Si Liu Gang

来源：Communications in Theoretical Physics, 2009, 51(3): 519-523.

DOI：10.1088/0253-6102/51/3/28

• optical solitons
• intersubband transitions
• semiconductor quantum well

We demonstrate the formation of ultraslow dark optical solitans with a four-level scheme in an asymmetric semiconductor double quantum well (SDQW) structure based on intersubband transitions by using only a low-intensity pulsed laser radiation. With appropriate conditions we show numerically that the dark optical soliton can travel with a ultraslow group velocity V(g)/c similar to -10(-3). Such a semiconductor system is much more practical than its atomic counterpart because of its flexible design and the controllable interface strength. This nonlinear optical process in the SDQW solid-state material may be used for the control technology of optical delay lines and optical buffers.

• 出版日期2009-3
• 单位华中科技大学; 湖北师范大学