Noise-resistant control for a spin qubit array.

Autor:	Kestner JP; 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., Wang X; Condensed Matter Theory Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA., Bishop LS; 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., Barnes E; Condensed Matter Theory Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA., Das Sarma S; 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.
Jazyk:	angličtina
Zdroj:	Physical review letters [Phys Rev Lett] 2013 Apr 05; Vol. 110 (14), pp. 140502. Date of Electronic Publication: 2013 Apr 05.
DOI:	10.1103/PhysRevLett.110.140502
Abstrakt:	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.
Databáze:	MEDLINE
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