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Updated: Dec 11, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Resource-efficient frequency conversion for quantum networks via sequential four-wave mixing.

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    This summary is machine-generated.

    We developed an efficient method using a single laser for frequency conversion in photonic crystal fiber. This technique enables bidirectional light conversion for quantum networks.

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    Area of Science:

    • Optics and Photonics
    • Quantum Information Science

    Background:

    • Efficient frequency conversion is crucial for interfacing quantum memories and optical networks.
    • Photonic crystal fibers offer unique nonlinear optical properties for light manipulation.

    Purpose of the Study:

    • To demonstrate a resource-efficient scheme for bidirectional frequency conversion.
    • To achieve conversion between strontium ion emission and telecommunication wavelengths.
    • To assess the scalability of the scheme for quantum network applications.

    Main Methods:

    • Utilized Bragg-scattering four-wave mixing in a photonic crystal fiber.
    • Employed a single pump laser for frequency conversion.
    • Investigated bidirectional conversion of coherent light.

    Main Results:

    • Achieved efficient frequency conversion between 1092 nm (Sr+ emission) and the telecommunication C band.
    • Demonstrated conversion efficiencies of 4.2% for up-conversion and 37% for down-conversion.
    • Showcased the potential for scaling the scheme for hybrid light-matter quantum networks.

    Conclusions:

    • The proposed scheme offers a resource-efficient approach to frequency conversion.
    • The demonstrated efficiencies and scalability are promising for practical quantum network implementation.
    • This method facilitates the integration of quantum emitters with existing fiber optic infrastructure.