Closed-loop control of a GaAs-based singlet-triplet spin qubit with 99.5% gate fidelity and low leakage

The exchange interaction between spins poses considerable challenges for high-fidelity control of semiconductor spin qubits. Here, the authors use pulse optimization and closed-loop control to achieve a gate fidelity of 99.5% for exchange-based single-qubit gates of two-electron spin qubits in GaAs.

Bibliographic Details
Main Authors:	Pascal Cerfontaine, Tim Botzem, Julian Ritzmann, Simon Sebastian Humpohl, Arne Ludwig, Dieter Schuh, Dominique Bougeard, Andreas D. Wieck, Hendrik Bluhm
Format:	Article
Language:	English
Published:	Nature Publishing Group 2020-08-01
Series:	Nature Communications
Online Access:	https://doi.org/10.1038/s41467-020-17865-3

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spelling	doaj-abb76d15af0640d8b708f2a20c8bc90b2021-08-22T11:41:41ZengNature Publishing GroupNature Communications2041-17232020-08-011111610.1038/s41467-020-17865-3Closed-loop control of a GaAs-based singlet-triplet spin qubit with 99.5% gate fidelity and low leakagePascal Cerfontaine0Tim Botzem1Julian Ritzmann2Simon Sebastian Humpohl3Arne Ludwig4Dieter Schuh5Dominique Bougeard6Andreas D. Wieck7Hendrik Bluhm8JARA-FIT Institute for Quantum Information, Forschungszentrum Jülich GmbH and RWTH Aachen UniversityJARA-FIT Institute for Quantum Information, Forschungszentrum Jülich GmbH and RWTH Aachen UniversityLehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität BochumJARA-FIT Institute for Quantum Information, Forschungszentrum Jülich GmbH and RWTH Aachen UniversityLehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität BochumInstitut für Experimentelle und Angewandte Physik, Universität RegensburgInstitut für Experimentelle und Angewandte Physik, Universität RegensburgLehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität BochumJARA-FIT Institute for Quantum Information, Forschungszentrum Jülich GmbH and RWTH Aachen UniversityThe exchange interaction between spins poses considerable challenges for high-fidelity control of semiconductor spin qubits. Here, the authors use pulse optimization and closed-loop control to achieve a gate fidelity of 99.5% for exchange-based single-qubit gates of two-electron spin qubits in GaAs.https://doi.org/10.1038/s41467-020-17865-3
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Pascal Cerfontaine Tim Botzem Julian Ritzmann Simon Sebastian Humpohl Arne Ludwig Dieter Schuh Dominique Bougeard Andreas D. Wieck Hendrik Bluhm
spellingShingle	Pascal Cerfontaine Tim Botzem Julian Ritzmann Simon Sebastian Humpohl Arne Ludwig Dieter Schuh Dominique Bougeard Andreas D. Wieck Hendrik Bluhm Closed-loop control of a GaAs-based singlet-triplet spin qubit with 99.5% gate fidelity and low leakage Nature Communications
author_facet	Pascal Cerfontaine Tim Botzem Julian Ritzmann Simon Sebastian Humpohl Arne Ludwig Dieter Schuh Dominique Bougeard Andreas D. Wieck Hendrik Bluhm
author_sort	Pascal Cerfontaine
title	Closed-loop control of a GaAs-based singlet-triplet spin qubit with 99.5% gate fidelity and low leakage
title_short	Closed-loop control of a GaAs-based singlet-triplet spin qubit with 99.5% gate fidelity and low leakage
title_full	Closed-loop control of a GaAs-based singlet-triplet spin qubit with 99.5% gate fidelity and low leakage
title_fullStr	Closed-loop control of a GaAs-based singlet-triplet spin qubit with 99.5% gate fidelity and low leakage
title_full_unstemmed	Closed-loop control of a GaAs-based singlet-triplet spin qubit with 99.5% gate fidelity and low leakage
title_sort	closed-loop control of a gaas-based singlet-triplet spin qubit with 99.5% gate fidelity and low leakage
publisher	Nature Publishing Group
series	Nature Communications
issn	2041-1723
publishDate	2020-08-01
description	The exchange interaction between spins poses considerable challenges for high-fidelity control of semiconductor spin qubits. Here, the authors use pulse optimization and closed-loop control to achieve a gate fidelity of 99.5% for exchange-based single-qubit gates of two-electron spin qubits in GaAs.
url	https://doi.org/10.1038/s41467-020-17865-3
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Closed-loop control of a GaAs-based singlet-triplet spin qubit with 99.5% gate fidelity and low leakage

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