Mitigating electric and magnetic noise to enhance performance of a universal ion-based quantum computer

POSTER

Abstract

Robust trapped ion quantum computers can be used to simulate numerous quantum phenomena and many-body physics systems, explore quantum error correction codes and noise models, and investigate challenges regarding scaling. Here, we present progress on building a state-of-the-art machine with full control of up to 32 171Yb+ ion qubits. We mitigate sources of electric field noise that affect the heating of motion and thereby our gate fidelity. We also built an enclosure for magnetic and acoustic shielding of the system. We discuss the electrical and magnetic field noise effect on the system performance leading to improved T2 time and lower heating rates. These performance upgrades should lead to better fidelity gates and expand the complexity of physics that we can simulate with our quantum processor.

*This work is supported by IARPA LogiQ program, NSF Practical Fully-Connected Quantum Computer program, DOE program on Quantum Computing in Chemical and Material Sciences, AFOSR MURI on Quantum Measurement and Verification, and AFOSR MURI on Interactive Quantum Computation and Communication Protocols.

Presenters

  • Debopriyo Biswas

    • Duke University

Authors

  • Debopriyo Biswas

    • Duke University

  • Liudmila Zhukas

    • Duke University

  • Yichao Yu

    • Duke Quantum Center; Duke Electrical and Computer Engineering

  • Bahaa Harraz

    • University of Maryland
    • Duke Quantum Center; Duke Electrical and Computer Engineering

  • Keqin Yan

    • Duke Quantum Center; Duke Physics

  • Vivian Zhang

    • Duke Quantum Center; Duke Electrical and Computer Engineering

  • Crystal Noel

    • Duke University

  • Alexander Kozhanov

    • Duke University
    • Duke Quantum Center; Duke Electrical and Computer Engineering

  • Christopher Monroe

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