Single Photon Generation with <sup>138</sup>Ba<sup>+</sup> Ions Excited by Pulsed Light for Quantum Networking

ORAL

Abstract

Trapped ions are among the most promising platforms for quantum computing and quantum communication due to their long coherence and excellent controllability. Individual traps with ion chains can be combined into a larger quantum system offering scalability for universal quantum computing. 138Ba+ ions are especially attractive for quantum networking because they emit light at 493 nm, allowing us to benefit from fiber technologies for remote entanglement over long distances. We aim to demonstrate S1/2→P1/2 excitation with ultra-short pulsed light by a frequency-doubled Ti:Sapphire laser and the generation of single photons by spontaneous emission.

*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

  • Mikhail Shalaev

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

Authors

  • Mikhail Shalaev

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

  • Isabella Goetting

    • Physics Department, Duke Quantum Center, Duke University

  • Yao De George Toh

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

  • 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

  • Christopher Monroe

    • Department of Electrical and Computer Engineering and Physics, Duke Quantum Center, Duke University; Joint Quantum Institute, Department of Physics, University of Maryland, College Park; IonQ Inc.
    • Duke University
    • JQI, QuIcs, Department of Physics, University of Maryland, IonQ Inc, College Park MD; DQC, Dept of Physics, Dept. of ECE, Duke University, Durham, NC
    • Electrical and Computer Engineering Department, Duke Quantum Center, Duke University; Joint Quantum Institute, University of Maryland
    • Duke Quantum Center and Department of Electrical and Computer Engineering (and Physics), Duke University, Durham, NC; IonQ, Inc., College Park, MD 20740