Teleported CNOT Gate in a Mixed-Species Trapped-Ion System

ORAL

Abstract

Scaling up quantum information processing (QIP) can be aided by distributing qubits across multiple processing zones. Universal quantum computation across such an architecture will require entangling gates between qubits in separate zones. Quantum gate teleportation achieves this, requiring only local operations within each zone, a single entangled ancilla pair split between the two zones, and classical communication. Using this protocol, we demonstrate a teleported CNOT gate between two spatially separated 9Be+ ions by means of a split entangled pair of 25Mg+ ions and measure an entanglement fidelity in the interval (0.845, 0.872) at the 95% confidence level. Our demonstration combines many important tools for scaling trapped-ion QIP, including ion separation and shuttling, individually addressed single qubit rotations and detections, same- and mixed-species entangling gates, and real-time conditional feedforward operations.

*This work was supported by the Office of the Director of National Intelligence (ODNI) Intelligence Advanced Research Projects Activity (IARPA), ONR, the NIST Quantum Information Program, and the National Science Foundation Graduate Research Fellowship Program.

–

Presenters

  • Stephen D Erickson

    • Time & Frequency Division, National Institute of Standards and Technology Boulder
    • National Institute of Standards and Technology

Authors

  • Stephen D Erickson

    • Time & Frequency Division, National Institute of Standards and Technology Boulder
    • National Institute of Standards and Technology

  • Yong Wan

    • National Institute of Standards and Technology

  • Daniel Kienzler

    • National Institute of Standards and Technology

  • Karl Mayer

    • NIST
    • National Institute of Standards and Technology

  • Ting Rei Tan

    • National Institute of Standards and Technology

  • Jenny Wu

    • Time & Frequency Division, National Institute of Standards and Technology Boulder
    • National Institute of Standards and Technology

  • Hilma Vasconcelos

    • National Institute of Standards and Technology

  • Scott Glancy

    • National Institute of Standards and Technology

  • Emanuel H Knill

    • NIST
    • National Institute of Standards and Technology

  • David J Wineland

    • University of Oregon, Eugene
    • National Institute of Standards and Technology

  • Andrew C Wilson

    • Time & Frequency Division, National Institute of Standards and Technology Boulder
    • National Institute of Standards and Technology Boulder
    • National Institute of Standards and Technology, Boulder
    • National Institute of Standards and Technology

  • Dietrich Leibfried

    • Time & Frequency Division, National Institute of Standards and Technology Boulder
    • National Institute of Standards and Technology Boulder
    • Time and Frequency Division, NIST, Boulder
    • National Institute of Standards and Technology, Boulder
    • National Institute of Standards and Technology