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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Low-cross-talk waveguide polarization multiplexer/demultiplexer for lambda = 1.32 microm.

R C Alferness, L L Buhl

    Optics Letters
    |September 2, 2009
    PubMed
    Summary
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    We developed a new integrated-optic splitter for selecting or extracting both TE and TM polarizations. This device offers high polarization selectivity with crosstalk below -30 dB.

    Area of Science:

    • Photonics and Optical Engineering
    • Materials Science

    Background:

    • Integrated optics offer miniaturized optical components.
    • Polarization control is crucial for optical signal processing.

    Purpose of the Study:

    • To demonstrate a novel integrated-optic device for TE/TM mode splitting.
    • To achieve high polarization selectivity and simultaneous mode extraction.

    Main Methods:

    • Utilized a titanium-indiffused lithium niobate (Ti:LiNbO3) directional coupler.
    • Applied specific voltages to control polarization selection.

    Main Results:

    • Achieved polarization selection with crosstalk below -30 dB.
    • Demonstrated simultaneous extraction of TE and TM modes with -24 dB crosstalk.

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    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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    Published on: September 5, 2019

    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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    Conclusions:

    • The proposed Ti:LiNbO3 directional coupler effectively functions as a polarization-selective splitter.
    • The device shows potential for advanced optical communication and signal processing applications.