Slow light propagation without absorption based on intersubband transitions in a semiconductor quantum well

Ding-an Han; Ya-guang Zeng; Yan-feng Bai

doi:10.1007/s11801-012-2276-8

Optoelectronics Letters ›› 2012, Vol. 8 ›› Issue (5) : 397-400. DOI: 10.1007/s11801-012-2276-8

Article

Slow light propagation without absorption based on intersubband transitions in a semiconductor quantum well

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Abstract

When semiconductor quantum wells (SQWs) interact with lasers, the group velocity of the low-intensity light pulse is studied theoretically. It is shown that by adjusting the parameters, slow light propagation of the probe field can be exhibited in such a system. Meanwhile, the probe absorption-gain spectra can be changed from absorption to zero, i.e., electromagnetically induced transparency (EIT). It is easy to observe the light propagation experimentally, and it leads to potential applications in many fields of solid-state quantum information, for example, optical switching, detection and quantum computing.

Keywords

Group Velocity / Probe Field / Quantum Well / Electromagnetically Induce Transparency / Group Index

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Ding-an Han, Ya-guang Zeng, Yan-feng Bai. Slow light propagation without absorption based on intersubband transitions in a semiconductor quantum well. Optoelectronics Letters, 2012, 8(5): 397‒400 https://doi.org/10.1007/s11801-012-2276-8

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This work has been supported by the National Natural Science Foundation of China (Nos.61008063, 10904015 and 10547108), and the Key Project of the National Natural Science Foundation of China (No.60837004).