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    Demonstration of a Reconfigurable Entangled Radio-Frequency Photonic Sensor Network

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    PhysRevLett.124.150502.pdf
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    Author
    Xia, Yi
    Li, Wei
    Clark, William
    Hart, Darlene
    Zhuang, Quntao
    Zhang, Zheshen
    Affiliation
    Univ Arizona, Dept Elect & Comp Engn
    Issue Date
    2020-04-17
    
    Metadata
    Show full item record
    Publisher
    AMER PHYSICAL SOC
    Citation
    Xia, Y., Li, W., Clark, W., Hart, D., Zhuang, Q., & Zhang, Z. (2020). Demonstration of a Reconfigurable Entangled Radio-Frequency Photonic Sensor Network. Physical Review Letters, 124(15). doi: 10.1103/physrevlett.124.150502
    Journal
    PHYSICAL REVIEW LETTERS
    Rights
    Copyright © 2020 American Physical Society.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    Quantum metrology takes advantage of nonclassical resources such as entanglement to achieve a sensitivity level below the standard quantum limit. To date, almost all quantum-metrology demonstrations are restricted to improving the measurement performance at a single sensor, but a plethora of applications require multiple sensors that work jointly to tackle distributed sensing problems. Here, we propose and experimentally demonstrate a reconfigurable sensor network empowered by continuous-variable (CV) multipartite entanglement. Our experiment establishes a connection between the entanglement structure and the achievable quantum advantage in different distributed sensing problems. The demonstrated entangled sensor network is composed of three sensor nodes each equipped with an electro-optic transducer for the detection of radio-frequency (RF) signals. By properly tailoring the CV multipartite entangled states, the entangled sensor network can be reconfigured to maximize the quantum advantage in distributed RF sensing problems such as measuring the angle of arrival of an RF field. The rich physics of CV multipartite entanglement unveiled by our work would open a new avenue for distributed quantum sensing and would lead to applications in ultrasensitive positioning, navigation, and timing.
    ISSN
    0031-9007
    PubMed ID
    32357051
    DOI
    10.1103/PhysRevLett.124.150502
    Version
    Final published version
    ae974a485f413a2113503eed53cd6c53
    10.1103/PhysRevLett.124.150502
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    UA Faculty Publications

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