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    Multiplexed quantum repeaters based on dual-species trapped-ion systems

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    PhysRevA.105.022623.pdf
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    Author
    Dhara, P.
    Linke, N.M.
    Waks, E.
    Guha, S.
    Seshadreesan, K.P.
    Affiliation
    Wyant College of Optical Sciences, University of Arizona
    Issue Date
    2022
    
    Metadata
    Show full item record
    Publisher
    American Physical Society
    Citation
    Dhara, P., Linke, N. M., Waks, E., Guha, S., & Seshadreesan, K. P. (2022). Multiplexed quantum repeaters based on dual-species trapped-ion systems. Physical Review A.
    Journal
    Physical Review A
    Rights
    Copyright © 2022 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
    Trapped ions form an advanced technology platform for quantum information processing with long qubit coherence times, high-fidelity quantum logic gates, optically active qubits, and a potential to scale up in size while preserving a high level of connectivity between qubits. These traits make them attractive not only for quantum computing, but also for quantum networking. Dedicated, special-purpose trapped-ion processors in conjunction with suitable interconnecting hardware can be used to form quantum repeaters that enable high-rate quantum communications between distant trapped-ion quantum computers in a network. In this regard, hybrid traps with two distinct species of ions, where one ion species can generate ion-photon entanglement that is useful for optically interfacing with the network and the other has long memory lifetimes, useful for qubit storage, have been proposed for entanglement distribution. We consider an architecture for a repeater based on such dual-species trapped-ion systems. We propose and analyze a protocol based on spatial and temporal mode multiplexing for entanglement distribution across a line network of such repeaters. Our protocol offers enhanced rates compared to rates previously reported for such repeaters. We determine the ion resources required at the repeaters to attain the enhanced rates, and the best rates attainable when constraints are placed on the number of repeaters and the number of ions per repeater. Our results bolster the case for near-term trapped-ion systems as quantum repeaters for long distance quantum communications. © 2022 American Physical Society.
    Note
    Immediate access
    ISSN
    2469-9926
    DOI
    10.1103/PhysRevA.105.022623
    Version
    Final published version
    ae974a485f413a2113503eed53cd6c53
    10.1103/PhysRevA.105.022623
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    UA Faculty Publications

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