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Related Concept Videos

Standing Waves in a Cavity01:28

Standing Waves in a Cavity

940
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
940

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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
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Lithium niobate waveguide squeezer with integrated cavity length stabilisation for network applications.

M Stefszky, F Vom Bruch, M Santandrea

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    |October 20, 2023
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    Summary

    We developed a stable squeezed light generator using a titanium indiffused waveguide resonator with an integrated electro-optic modulator. This device achieves significant squeezed light production and cavity stabilization for network applications.

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    Area of Science:

    • Quantum optics
    • Integrated photonics
    • Materials science

    Background:

    • Squeezed light generation is crucial for quantum technologies.
    • Maintaining resonator stability is a key challenge in integrated photonic devices.
    • Photorefraction can degrade performance in optical systems.

    Purpose of the Study:

    • To demonstrate a stable squeezed light source using integrated photonics.
    • To mitigate photorefraction in waveguide resonators.
    • To enable squeezed light generation for network applications.

    Main Methods:

    • Fabrication of a titanium indiffused waveguide resonator.
    • Integration of an electro-optic modulator (EOM) for cavity length stabilization.
    • Characterization of squeezed light generation at 1550 nm.

    Main Results:

    • Achieved close to 5 dB of squeezed light (2.4 dB measured).
    • Demonstrated cavity resonance lock for tens of minutes.
    • Showcased concurrent squeezed light production and stabilization using the integrated EOM.

    Conclusions:

    • The integrated EOM effectively stabilizes the resonator and mitigates photorefraction.
    • This platform is suitable for generating squeezed light in network applications.
    • The device offers a robust solution for stable quantum light generation.