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Related Experiment Video

Updated: Oct 2, 2025

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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Light detection and ranging with entangled photons.

Jiuxuan Zhao, Ashley Lyons, Arin Can Ulku

    Optics Express
    |February 25, 2022
    PubMed
    Summary

    This study introduces a quantum LiDAR system using entangled photon pairs to effectively isolate signals from background noise and jamming. This breakthrough enables robust depth imaging in challenging environments, enhancing security and performance.

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    Area of Science:

    • Quantum optics
    • Photonics
    • LiDAR technology

    Background:

    • Single-photon light detection and ranging (LiDAR) is crucial for depth imaging but struggles with signal isolation from background light and jamming.
    • Existing LiDAR systems face challenges in distinguishing true signals from spurious sources in complex environments.

    Purpose of the Study:

    • To develop a robust method for isolating LiDAR signals from spurious sources using quantum principles.
    • To demonstrate a quantum LiDAR system capable of functioning in the presence of significant noise and interference.

    Main Methods:

    • Utilizing a time-resolved coincidence scheme based on entangled photon pairs.
    • Exploiting spatio-temporal correlations inherent in entangled photons to filter signals.
    • Implementing a photon-pair-based LiDAR system for depth information retrieval.

    Main Results:

    • Successfully demonstrated depth information retrieval in the presence of both synchronous and asynchronous spurious signals.
    • The quantum LiDAR system showed robustness without prior knowledge of the scene or target.
    • Effective isolation of the LiDAR signal from background light and jamming signals was achieved.

    Conclusions:

    • A photon-pair-based LiDAR system can overcome limitations of conventional LiDAR by effectively filtering spurious signals.
    • This approach enables the development of robust and secure quantum LiDAR systems.
    • The findings pave the way for advanced time-resolved quantum imaging applications.