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Physica Scripta

Transient gain-absorption properties of the probe field in a semiconductor quantum well

Zhiping Wang, Hong-Yi Fan

Published Sep 1, 2010• 4 citations
Publisher

Abstract

We investigate the transient gain-absorption properties of the probe field in an n -doped three-level semiconductor quantum well system. It is shown that the coupling field and the pumping field affect the optical behavior dramatically, which can be used to manipulate the gain-absorption coefficient. The dependence of the gain-absorption properties on the relative phase is also discussed. Our study is much more practical than its atomic counterpart due to its flexible design and the wide adjustable parameters. Thus, it may provide some new possibilities for technological applications.

DOI
10.1088/0031-8949/82/03/035703

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We investigate the transient gain-absorption properties of the probe field in an n -doped three-level semiconductor quantum well system. It is shown that the coupling field and the pumping field affect the optical behavior dramatically, which can be used to manipulate the gain-absorption coefficient. The dependence of the gain-absorption properties on the relative phase is also discussed. Our study is much more practical than its atomic counterpart due to its flexible design and the wide adjustable parameters. Thus, it may provide some new possibilities for technological applications.
Abstract The transient gain-absorption properties of the probe field in vertical triple quantum dots assisted by double tunneling and incoherent pumping are investigated. With a proper intensity value and detuning of the second tunneling, the transient gain in triple quantum dots with incoherent pumping can be completely eliminated. In addition, the incoherent pumping affects both the amplitude of the transient absorption and the steady-state value. The dependence of transient behaviors on other parameters, such as the radiative decay rate and the pure dephasing decay rate of the quantum dots, is also discussed. The scheme may have important applications in quantum information networks and communication.
We study the optical amplification and absorption properties in a double-Λ four level system of GaAs/AlGaAs multiple quantum wells(MQWs) under realistic experimental conditions.The amplification and absorption responses of two weak fields can be achieved by adjusting the relative phase,the probe detuning,and the two pump Rabi frequencies appropriately.The investigation is much more practical than its atomic counterpart because of its flexible design and the wide adjustable parameters.It may provide a new possibility in technological applications for the light amplifier working on quantum coherence effects in MQWs solid-state system.
We study the optical amplification and absorption properties in a double-Λ four level system of GaAs/AlGaAs multiple quantum wells (MQWs) under realistic experimental conditions. The amplification and absorption responses of two weak fields can be achieved by adjusting the relative phase, the probe detuning, and the two pump Rabi frequencies appropriately. The investigation is much more practical than its atomic counterpart because of its flexible design and the wide adjustable parameters. It may provide a new possibility in technological applications for the light amplifier working on quantum coherence effects in MQWs solid-state system.