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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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Phase-sharing using a Mach-Zehnder interferometer.

Lijo Thomas, J Solomon Ivan, P A Ameen Yasir

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    |May 14, 2015
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    Summary
    This summary is machine-generated.

    This study demonstrates a phase-sharing scheme using a Mach-Zehnder interferometer for secure communication. The method enables simultaneous phase object monitoring and shared secret-key generation, mimicking atmospheric turbulence.

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    Area of Science:

    • Quantum optics
    • Optical interferometry
    • Secure communication

    Background:

    • Mach-Zehnder interferometers are fundamental tools in optics.
    • Phase estimation is crucial for various optical sensing and communication applications.
    • Secure key distribution is a key challenge in modern cryptography.

    Purpose of the Study:

    • To demonstrate a novel phase-sharing scheme using a Mach-Zehnder interferometer.
    • To explore the potential for simultaneous monitoring of phase objects by two observers.
    • To convert the phase-sharing scheme into a practical secret-key sharing scheme.

    Main Methods:

    • Utilizing two coherent light fields with orthogonal polarizations as sources.
    • Implementing independent interference at opposing ends of the interferometer.
    • Employing a pseudorandom phase plate to simulate atmospheric turbulence.

    Main Results:

    • Achieved nearly identical phase estimation by two observers at opposite ends.
    • Successfully demonstrated shared secret-key generation through phase correlate evaluation.
    • Showcased the potential for random phase encryption of images using shared random phases.

    Conclusions:

    • The demonstrated phase-sharing scheme offers a robust method for secure communication.
    • The scheme allows for simultaneous, distributed monitoring of phase objects.
    • This technique provides a foundation for advanced optical security and encryption applications.