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Related Concept Videos

Standing Waves in a Cavity01:28

Standing Waves in a Cavity

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:
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Updated: Jun 19, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
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Published on: November 30, 2012

Squeezing in a quasi-phase-matched LiNbO(3) waveguide.

D K Serkland, M M Fejer, R L Byer

    Optics Letters
    |October 29, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Researchers achieved traveling-wave quadrature squeezing in a lithium niobate waveguide, a novel method for quantum optics. This technique overcomes limitations seen in bulk experiments, paving the way for advanced quantum technologies.

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    Last Updated: Jun 19, 2026

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    Area of Science:

    • Quantum Optics
    • Nonlinear Optics
    • Integrated Photonics

    Background:

    • Bulk squeezing experiments face gain-induced diffraction, limiting performance.
    • Waveguide-based approaches offer potential to overcome these limitations.

    Purpose of the Study:

    • To demonstrate traveling-wave quadrature squeezing at 1064 nm in a quasi-phase-matched lithium niobate waveguide.
    • To investigate phase-sensitive amplification and its correlation with squeezing.
    • To utilize integrated photonics for enhanced quantum squeezing generation.

    Main Methods:

    • Fabrication of independent single-mode waveguides for parametric amplification and second-harmonic generation.
    • Utilizing a 10-mm-long waveguide parametric amplifier with 0.5 W peak pump power at 532 nm.
    • Employing impedance-matched electrically resonant detection for sensitive signal measurement.

    Main Results:

    • Achieved a gain of 1.9 for 20-ps mode-locked pulses.
    • Observed 14% squeezing, correlating well with theoretical predictions.
    • Demonstrated close agreement between measured phase-sensitive amplification and theory.

    Conclusions:

    • Traveling-wave quadrature squeezing is successfully demonstrated in a LiNbO(3) waveguide.
    • This method effectively avoids gain-induced diffraction, offering advantages over bulk experiments.
    • The results validate the theoretical model and highlight the potential of integrated photonics for quantum squeezing.