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    Researchers transmitted spatial quantum fluctuations through multi-core optical fibers, preserving quantum correlations. This demonstrates the potential for fiber bundles to carry quantum information for quantum imaging applications.

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    Area of Science:

    • Quantum Optics
    • Photonics
    • Quantum Information Science

    Background:

    • Multi-core optical fibers are standard for classical image transmission in endoscopy.
    • Extending optical fiber capabilities to the quantum domain is an active area of research.

    Purpose of the Study:

    • To investigate the transmission of spatial quantum fluctuations through a bundle of optical fibers.
    • To determine if quantum correlations can be maintained during transmission via fiber bundles.

    Main Methods:

    • Utilized twin beams with correlated intensity fluctuations.
    • Sent one beam through a conduit composed of densely packed multi-core optical fibers.
    • Analyzed intensity-difference squeezing in matching regions of the beams.

    Main Results:

    • Intensity-difference squeezing was preserved when one twin beam was transmitted through the fiber bundle.
    • This preservation occurred in the limit of high fiber core density.
    • Demonstrated the feasibility of transmitting quantum information encoded in spatial degrees of freedom.

    Conclusions:

    • Fiber bundles can effectively transport spatial quantum fluctuations.
    • This capability supports the integration of guided-light technology with quantum imaging.
    • Opens new avenues for quantum communication and sensing using fiber optics.