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Updated: Jun 22, 2026

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
15:58

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Published on: December 3, 2013

Electromagnetically induced transparency viaelectron spin coherence in a quantum wellwaveguide.

Tao Li, Hailin Wang, N Kwong

    Optics Express
    |May 28, 2009
    PubMed
    Summary
    This summary is machine-generated.

    We demonstrate a new method for achieving electromagnetically induced transparency (EIT) using electron spin coherence in quantum wells without magnetic fields. This technique utilizes light hole transitions to control EIT via spin coherence.

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    Published on: October 13, 2017

    Area of Science:

    • Quantum optics
    • Condensed matter physics
    • Semiconductor spintronics

    Background:

    • Electromagnetically induced transparency (EIT) is a quantum interference effect.
    • Controlling quantum coherence in semiconductor systems is crucial for quantum technologies.

    Purpose of the Study:

    • To propose and analyze a novel scheme for achieving EIT in semiconductor quantum wells.
    • To utilize robust electron spin coherence for EIT without external magnetic fields.

    Main Methods:

    • Employing light hole transitions in a quantum well waveguide.
    • Configuring polarization to form a crossed double-V system.
    • Analyzing the modification of EIT by coherent wave mixing.

    Main Results:

    • Demonstrated a scheme for EIT using electron spin coherence.
    • Achieved spin coherence without an external magnetic field.
    • Observed strong modification of EIT due to spin-coherent wave mixing.

    Conclusions:

    • The proposed scheme offers a new pathway for EIT in semiconductors.
    • Electron spin coherence provides a robust mechanism for quantum control in quantum wells.
    • This work has implications for optical devices and quantum information processing.