2008/03/13 by Wen-Xing Yang, Yang, Wen-Xing, Jin Xu +4
Computer Science · Physics and Astronomy · #FOS: Physical sciences #Optics (physics.optics) #Quantum Information and Cryptography #Quantum optics and atomic interactions #Semiconductor Quantum Structures and Devices #physics.optics
paper · pdf · doi:10.48550/arxiv.0803.1888
arxiv created 2008/03/13 · openalex publication_date 2008/03/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We propose and analyze an efficient scheme for suppressing the absorption of a weak probe field based on intersubband transitions in a four-level asymmetric coupled-quantum well (CQW) driven coherently by a probe laser field and a control laser field. By using the numerical simulation, we find that the magnitude of the transient absorption of the probe field is smaller than the three-level system based on the electromagnetically induced transparency (EIT) at line center of the probe transition, moreover, comparing with the scheme in three-level asymmetric double QW system, the transparency hole of the present work is much broader. By analyzing the steady-state process analytically and numerically, our results show that the probe absorption can be completely eliminated under the condition of Raman resonance (i.e. two-photon detuning is zero). Besides, we can observe one transparency window without requiring one- or two-photon detuning exactly vanish. This investigation may provide the possible scheme for EIT in solids by using CQW.