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Hybrid quantum gates between flying photon and diamond nitrogen-vacancy centers assisted by optical microcavities

Hybrid quantum gates hold great promise for quantum information processing since they preserve the advantages of different quantum systems. Here we present compact quantum circuits to deterministically implement controlled-NOT, Toffoli, and Fredkin gates between a flying photon qubit and diamond nit...

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Detalles Bibliográficos
Autores principales: Wei, Hai-Rui, Lu Long, Gui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4536491/
https://www.ncbi.nlm.nih.gov/pubmed/26271899
http://dx.doi.org/10.1038/srep12918
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author Wei, Hai-Rui
Lu Long, Gui
author_facet Wei, Hai-Rui
Lu Long, Gui
author_sort Wei, Hai-Rui
collection PubMed
description Hybrid quantum gates hold great promise for quantum information processing since they preserve the advantages of different quantum systems. Here we present compact quantum circuits to deterministically implement controlled-NOT, Toffoli, and Fredkin gates between a flying photon qubit and diamond nitrogen-vacancy (NV) centers assisted by microcavities. The target qubits of these universal quantum gates are encoded on the spins of the electrons associated with the diamond NV centers and they have long coherence time for storing information, and the control qubit is encoded on the polarizations of the flying photon and can be easily manipulated. Our quantum circuits are compact, economic, and simple. Moreover, they do not require additional qubits. The complexity of our schemes for universal three-qubit gates is much reduced, compared to the synthesis with two-qubit entangling gates. These schemes have high fidelities and efficiencies, and they are feasible in experiment.
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spelling pubmed-45364912015-09-04 Hybrid quantum gates between flying photon and diamond nitrogen-vacancy centers assisted by optical microcavities Wei, Hai-Rui Lu Long, Gui Sci Rep Article Hybrid quantum gates hold great promise for quantum information processing since they preserve the advantages of different quantum systems. Here we present compact quantum circuits to deterministically implement controlled-NOT, Toffoli, and Fredkin gates between a flying photon qubit and diamond nitrogen-vacancy (NV) centers assisted by microcavities. The target qubits of these universal quantum gates are encoded on the spins of the electrons associated with the diamond NV centers and they have long coherence time for storing information, and the control qubit is encoded on the polarizations of the flying photon and can be easily manipulated. Our quantum circuits are compact, economic, and simple. Moreover, they do not require additional qubits. The complexity of our schemes for universal three-qubit gates is much reduced, compared to the synthesis with two-qubit entangling gates. These schemes have high fidelities and efficiencies, and they are feasible in experiment. Nature Publishing Group 2015-08-14 /pmc/articles/PMC4536491/ /pubmed/26271899 http://dx.doi.org/10.1038/srep12918 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Wei, Hai-Rui
Lu Long, Gui
Hybrid quantum gates between flying photon and diamond nitrogen-vacancy centers assisted by optical microcavities
title Hybrid quantum gates between flying photon and diamond nitrogen-vacancy centers assisted by optical microcavities
title_full Hybrid quantum gates between flying photon and diamond nitrogen-vacancy centers assisted by optical microcavities
title_fullStr Hybrid quantum gates between flying photon and diamond nitrogen-vacancy centers assisted by optical microcavities
title_full_unstemmed Hybrid quantum gates between flying photon and diamond nitrogen-vacancy centers assisted by optical microcavities
title_short Hybrid quantum gates between flying photon and diamond nitrogen-vacancy centers assisted by optical microcavities
title_sort hybrid quantum gates between flying photon and diamond nitrogen-vacancy centers assisted by optical microcavities
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4536491/
https://www.ncbi.nlm.nih.gov/pubmed/26271899
http://dx.doi.org/10.1038/srep12918
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