Composite multi-qubit gates dynamically corrected against charge noise and magnetic field noise for singlet-triplet qubits

ORAL

Abstract

We use previously described single-qubit SUPCODE pulses on both intra-qubit and inter-qubit exchange couplings, integrated with existing strategies such as BB1, to theoretically construct a CNOT gate that is robust against both charge noise and magnetic field gradient fluctuations. We show how this allows scalable, high-fidelity implementation of arbitrary multi-qubit operations using singlet-triplet spin qubits in the presence of experimentally realistic noise.

*This work is supported by LPS-NSA-CMTC, IARPA-MQCO and CNAM.

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Authors

  • Jason Kestner

    • Department of Physics, University of Maryland, Baltimore County, and Condensed Matter Theory Center, University of Maryland, College Park
    • Department of Physics, University of Maryland, Baltimore County and Condensed Matter Theory Center, University of Maryland, College Park
    • University of Maryland, Baltimore County

  • Edwin Barnes

    • Condensed Matter Theory Center, University of Maryland, College Park

  • Xin Wang

    • Condensed Matter Theory Center, University of Maryland, College Park

  • Lev Bishop

    • Condensed Matter Theory Center and Joint Quantum Institute, University of Maryland, College Park

  • Sankar Das Sarma

    • Condensed Matter Theory Center and Joint Quantum Institute, University of Maryland, College Park