Extending the coherence of a quantum dot hybrid qubit

Extending the coherence of a quantum dot hybrid qubit

Quantum information: improving semiconducting qubit performance Researchers in the United States demonstrate high tunability of spin qubits in silicon-based quantum dots. Mark Eriksson at the University of Wisconsin-Madison and colleagues have achieved more than a tenfold improvement in the performa...

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Bibliographic Details
Main Authors: Brandur Thorgrimsson, Dohun Kim, Yuan-Chi Yang, L. W. Smith, C. B. Simmons, Daniel R. Ward, Ryan H. Foote, J. Corrigan, D. E. Savage, M. G. Lagally, Mark Friesen, S. N. Coppersmith, M. A. Eriksson
Format: Article
Language:English
Published: Nature Portfolio 2017-08-01
Series:npj Quantum Information
Online Access:https://doi.org/10.1038/s41534-017-0034-2
Description
Summary:Quantum information: improving semiconducting qubit performance Researchers in the United States demonstrate high tunability of spin qubits in silicon-based quantum dots. Mark Eriksson at the University of Wisconsin-Madison and colleagues have achieved more than a tenfold improvement in the performance of these three-electron double dot qubits by tuning the electric fields used to confine electrons to quantum dots to a regime where the qubit was predicted to be much less susceptible to the effects of charge noise. Since charge noise limits the performance of many such qubits, these findings provide a path toward the fabrication of electrically gated qubits in silicon quantum dots with very high fidelities.
ISSN:2056-6387

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