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Compact, low-threshold squeezed light source.

J Arnbak, C S Jacobsen, R B Andrade

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    Summary
    This summary is machine-generated.

    Researchers developed a compact, fiber-based squeezed light source for quantum applications. This novel setup achieves significant squeezing, paving the way for more accessible quantum technologies.

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    Area of Science:

    • Quantum Optics
    • Quantum Information Science

    Background:

    • Squeezed light is crucial for quantum metrology, communication, and computation.
    • Current squeezed light sources are often bulky and complex, limiting their lab adoption.

    Purpose of the Study:

    • To develop a compact and high-performance squeezed light source.
    • To integrate commercially available fiber components with a free-space parametric down-conversion source.

    Main Methods:

    • Utilized a free-space double-resonant parametric down-conversion source.
    • Incorporated single-pass second-harmonic generation within a waveguide.
    • Assembled the setup on a 30 cm x 45 cm breadboard.

    Main Results:

    • Achieved 9.3 dB of squeezing at a 5 MHz sideband frequency.
    • Demonstrated a compact setup using fiber optics and free-space components.

    Conclusions:

    • The compact design represents a significant step towards practical squeezed light sources.
    • Further optimization can lead to a turn-key system exceeding 10 dB squeezing.