title: Noise-resistant control for a spin qubit array.
abstract: We develop a systematic method of performing corrected gate operations on an array of exchange-coupled singlet-triplet qubits in the presence of both fluctuating nuclear Overhauser field gradients and charge noise. The single-qubit control sequences we present have a simple form, are relatively short, and form the building blocks of a corrected cnot gate when also implemented on the interqubit exchange link. This is a key step towards enabling large-scale quantum computation in a semiconductor-based architecture by facilitating error reduction below the quantum error correction threshold for both single-qubit and multiqubit gate operations.
authors.affiliation: Department of Physics, University of Maryland Baltimore County, Baltimore, Maryland 21250, USA and Condensed Matter Theory Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
authors.forename: J P
authors.initials: JP
authors.lastname: Kestner
authors.affiliation: Condensed Matter Theory Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
authors.affiliation: Condensed Matter Theory Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA and Joint Quantum Institute, University of Maryland, College Park, Maryland 20742, USA.
authors.forename: Lev S
authors.initials: LS
authors.lastname: Bishop
authors.affiliation: Condensed Matter Theory Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
authors.forename: Edwin
authors.initials: E
authors.lastname: Barnes
authors.affiliation: Condensed Matter Theory Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA and Joint Quantum Institute, University of Maryland, College Park, Maryland 20742, USA.
authors.forename: S
authors.initials: S
authors.lastname: Das Sarma