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Realization of efficient quantum gates with a superconducting qubit-qutrit circuit

Building a quantum computer is a daunting challenge since it requires good control but also good isolation from the environment to minimize decoherence. It is therefore important to realize quantum gates efficiently, using as few operations as possible, to reduce the amount of required control and o...

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Autores principales: Bækkegaard, T., Kristensen, L. B., Loft, N. J. S., Andersen, C. K., Petrosyan, D., Zinner, N. T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6746868/
https://www.ncbi.nlm.nih.gov/pubmed/31527726
http://dx.doi.org/10.1038/s41598-019-49657-1
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author Bækkegaard, T.
Kristensen, L. B.
Loft, N. J. S.
Andersen, C. K.
Petrosyan, D.
Zinner, N. T.
author_facet Bækkegaard, T.
Kristensen, L. B.
Loft, N. J. S.
Andersen, C. K.
Petrosyan, D.
Zinner, N. T.
author_sort Bækkegaard, T.
collection PubMed
description Building a quantum computer is a daunting challenge since it requires good control but also good isolation from the environment to minimize decoherence. It is therefore important to realize quantum gates efficiently, using as few operations as possible, to reduce the amount of required control and operation time and thus improve the quantum state coherence. Here we propose a superconducting circuit for implementing a tunable system consisting of a qutrit coupled to two qubits. This system can efficiently accomplish various quantum information tasks, including generation of entanglement of the two qubits and conditional three-qubit quantum gates, such as the Toffoli and Fredkin gates. Furthermore, the system realizes a conditional geometric gate which may be used for holonomic (non-adiabatic) quantum computing. The efficiency, robustness and universality of the presented circuit makes it a promising candidate to serve as a building block for larger networks capable of performing involved quantum computational tasks.
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spelling pubmed-67468682019-09-27 Realization of efficient quantum gates with a superconducting qubit-qutrit circuit Bækkegaard, T. Kristensen, L. B. Loft, N. J. S. Andersen, C. K. Petrosyan, D. Zinner, N. T. Sci Rep Article Building a quantum computer is a daunting challenge since it requires good control but also good isolation from the environment to minimize decoherence. It is therefore important to realize quantum gates efficiently, using as few operations as possible, to reduce the amount of required control and operation time and thus improve the quantum state coherence. Here we propose a superconducting circuit for implementing a tunable system consisting of a qutrit coupled to two qubits. This system can efficiently accomplish various quantum information tasks, including generation of entanglement of the two qubits and conditional three-qubit quantum gates, such as the Toffoli and Fredkin gates. Furthermore, the system realizes a conditional geometric gate which may be used for holonomic (non-adiabatic) quantum computing. The efficiency, robustness and universality of the presented circuit makes it a promising candidate to serve as a building block for larger networks capable of performing involved quantum computational tasks. Nature Publishing Group UK 2019-09-16 /pmc/articles/PMC6746868/ /pubmed/31527726 http://dx.doi.org/10.1038/s41598-019-49657-1 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Bækkegaard, T.
Kristensen, L. B.
Loft, N. J. S.
Andersen, C. K.
Petrosyan, D.
Zinner, N. T.
Realization of efficient quantum gates with a superconducting qubit-qutrit circuit
title Realization of efficient quantum gates with a superconducting qubit-qutrit circuit
title_full Realization of efficient quantum gates with a superconducting qubit-qutrit circuit
title_fullStr Realization of efficient quantum gates with a superconducting qubit-qutrit circuit
title_full_unstemmed Realization of efficient quantum gates with a superconducting qubit-qutrit circuit
title_short Realization of efficient quantum gates with a superconducting qubit-qutrit circuit
title_sort realization of efficient quantum gates with a superconducting qubit-qutrit circuit
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6746868/
https://www.ncbi.nlm.nih.gov/pubmed/31527726
http://dx.doi.org/10.1038/s41598-019-49657-1
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