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Updated: Sep 17, 2025

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Generation and coherent control of dark-state spatial modes.

Huai-Che Shia, Siang-Wei Shao, Wu-Cheng Chiang

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    Summary

    We explore controlling dark-state polarization spatial modes using electromagnetically induced transparency. This enables manipulating stored light for applications in photonic memory and light modulation.

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    Area of Science:

    • Quantum optics
    • Atomic physics
    • Photonics

    Background:

    • Electromagnetically induced transparency (EIT) enables control over light propagation.
    • Dark-state polaritons are quantum states with unique light-matter interaction properties.
    • Spatial mode control is crucial for advanced photonic applications.

    Purpose of the Study:

    • To theoretically investigate the generation and dynamic control of dark-state polarization spatial modes.
    • To demonstrate engineering of discrete spatial modes using synthetic potentials.
    • To explore applications in photonic data manipulation.

    Main Methods:

    • Utilizing a combination of synthetic scalar and vector potentials.
    • Engineering discrete spatial modes of the dark-state polariton.
    • Analyzing quantum interference phenomena among these modes.
    • Verifying concepts via Rabi oscillations and stimulated Raman adiabatic passage.

    Main Results:

    • Demonstrated engineering of discrete spatial modes of dark-state polaritons.
    • Showcased quantum interference between spatial modes.
    • Verified Rabi oscillations between two spatial modes.
    • Confirmed stimulated Raman adiabatic passage among three spatial modes.

    Conclusions:

    • The proposed method allows for dynamic control of dark-state polarization spatial modes.
    • This technique enables the reallocation of stored photonic data.
    • Potential applications include photonic memory optimization and retrieved light modulation.