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Related Concept Videos

Propagation of Waves01:07

Propagation of Waves

When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
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Interference and Superposition of Waves01:07

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Propagation of Uncertainty from Random Error00:59

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¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

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Updated: Jul 3, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

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Published on: June 8, 2018

Enhancing underwater quantum communication robustness via partially coherent beams.

Yue Zeng, Jiaji Li, Xiaoliang Yang

    Optics Express
    |July 2, 2026
    PubMed
    Summary

    Partially coherent beams improve underwater quantum communication by stabilizing photon pair correlations. This method enhances stability through oceanic turbulence, mitigating information loss for practical applications.

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    Area of Science:

    • Quantum communication
    • Optics
    • Photonics

    Background:

    • Global quantum networks require reliable underwater quantum channels.
    • Underwater turbulence causes decoherence, disrupting entangled states and hindering quantum communication.

    Purpose of the Study:

    • To investigate a method using partially coherent beams to generate biphoton states for robust underwater quantum communication.
    • To theoretically analyze the influence of pump beam coherence on photon pair detection through oceanic turbulence.

    Main Methods:

    • Theoretical modeling of biphoton state generation using partially coherent beams.
    • Simulation of photon pair propagation through an oceanic turbulence model.
    • Analysis of coincidence detection and correlation stability.

    Main Results:

    • Partially coherent pump beams enhance the stability of photon pair correlations during underwater propagation.
    • Improved correlation stability mitigates information loss caused by photon scattering in turbulent water.
    • The proposed method offers a practical approach to overcoming decoherence challenges.

    Conclusions:

    • Utilizing partially coherent beams is a viable strategy for enhancing the efficiency and reliability of underwater quantum communication.
    • This research addresses a critical bottleneck in establishing global quantum networks.
    • The findings pave the way for more resilient quantum communication systems in challenging aquatic environments.