Progress on Multispecies Ion Trap Quantum Network Node

ORAL

Abstract

Trapped atomic ions are one of the leading platforms for quantum computing systems and quantum networks. We plan to utilize a modular architecture consisting of three separate traps, each containing a 171Yb+ memory qubit and a 138Ba+ communication qubit. We will collect single 493 nm photons from the middle node of the network using two in-vacuo high numerical aperture (NA=0.8) aspheric lenses. These lenses replace the NA=0.6 multi-component objectives we use to collect single photons from the end node traps. We present preliminary fiber coupling results and heating rate measurements from this system. We also discuss how to generate GHZ states among the three traps using both atomic species.

*This work is supported by the ARO with funding from the IARPA LogiQ program, the NSF STAQ Program, the DOE Quantum Systems Accelerator, the ARO MURI on Modular Quantum Circuits, the AFOSR MURI on Quantum Transduction, the AFOSR MURI on Interactive Quantum Computation and Communication Protocols, and the ARL Center for Distributed Quantum Information.

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Presenters

  • Yao De George Toh

    • Electrical and Computer Engineering Department, Duke Quantum Center, Duke University
    • JQI, University of Maryland, College Park

Authors

  • Yao De George Toh

    • Electrical and Computer Engineering Department, Duke Quantum Center, Duke University
    • JQI, University of Maryland, College Park

  • Allison L Carter

    • National Institute of Standards and Technology Boulder
    • JQI, University of Maryland, College Park
    • NIST/CU Boulder

  • Jameson O'Reilly

    • Physics Department, Duke Quantum Center, Duke University
    • JQI, University of Maryland, College Park

  • Sagnik Saha

    • Physics Department, Duke Quantum Center, Duke University
    • JQI, University of Maryland, College Park

  • Isabella M Goetting

    • DQC, Duke University, Durham

  • Mikhail Shalaev

    • Electrical and Computer Engineering Department, Duke Quantum Center, Duke University
    • DQC, Duke University, Durham

  • Christopher R Monroe

    • JQI and QuICS and Department of Physics, University of Maryland, College Park, MD 20742; Duke Quantum Center and Department of Physics, Duke University, Durham NC 27701; IonQ
    • JQI/QuICS/UMD Physics, DQC/Duke ECE, IonQ
    • JQI, University of Maryland, College Park
    • JQI and QuICS and Department of Physics, University of Maryland, College Park; Duke Quantum Center and Department of Physics (and ECE), Duke University; IonQ
    • JQI, QuICS, Dept. of Physics, University of Maryland, College Park, MD 20742; DQC, Dept. of ECE and Physics, Duke University, Durham, NC 27701; IonQ Inc., College Park, MD 20742