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Noise-resilient quantum evolution steered by dynamical decoupling
Realistic quantum computing is subject to noise. Therefore, an important frontier in quantum computing is to implement noise-resilient quantum control over qubits. At the same time, dynamical decoupling can protect the coherence of qubits. Here we demonstrate non-trivial quantum evolution steered by...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Pub. Group
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3741639/ https://www.ncbi.nlm.nih.gov/pubmed/23912335 http://dx.doi.org/10.1038/ncomms3254 |
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author | Liu, Gang-Qin Po, Hoi Chun Du, Jiangfeng Liu, Ren-Bao Pan, Xin-Yu |
author_facet | Liu, Gang-Qin Po, Hoi Chun Du, Jiangfeng Liu, Ren-Bao Pan, Xin-Yu |
author_sort | Liu, Gang-Qin |
collection | PubMed |
description | Realistic quantum computing is subject to noise. Therefore, an important frontier in quantum computing is to implement noise-resilient quantum control over qubits. At the same time, dynamical decoupling can protect the coherence of qubits. Here we demonstrate non-trivial quantum evolution steered by dynamical decoupling control, which simultaneously suppresses noise effects. We design and implement a self-protected controlled-NOT gate on the electron spin of a nitrogen-vacancy centre and a nearby carbon-13 nuclear spin in diamond at room temperature, by employing an engineered dynamical decoupling control on the electron spin. Final state fidelity of 0.91(1) is observed in preparation of a Bell state using the gate. At the same time, the qubit coherence time is elongated at least 30 fold. The design scheme does not require the dynamical decoupling control to commute with the qubit interaction and therefore works for general qubit systems. This work marks a step towards implementing realistic quantum computing systems. |
format | Online Article Text |
id | pubmed-3741639 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Nature Pub. Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-37416392013-08-13 Noise-resilient quantum evolution steered by dynamical decoupling Liu, Gang-Qin Po, Hoi Chun Du, Jiangfeng Liu, Ren-Bao Pan, Xin-Yu Nat Commun Article Realistic quantum computing is subject to noise. Therefore, an important frontier in quantum computing is to implement noise-resilient quantum control over qubits. At the same time, dynamical decoupling can protect the coherence of qubits. Here we demonstrate non-trivial quantum evolution steered by dynamical decoupling control, which simultaneously suppresses noise effects. We design and implement a self-protected controlled-NOT gate on the electron spin of a nitrogen-vacancy centre and a nearby carbon-13 nuclear spin in diamond at room temperature, by employing an engineered dynamical decoupling control on the electron spin. Final state fidelity of 0.91(1) is observed in preparation of a Bell state using the gate. At the same time, the qubit coherence time is elongated at least 30 fold. The design scheme does not require the dynamical decoupling control to commute with the qubit interaction and therefore works for general qubit systems. This work marks a step towards implementing realistic quantum computing systems. Nature Pub. Group 2013-08-05 /pmc/articles/PMC3741639/ /pubmed/23912335 http://dx.doi.org/10.1038/ncomms3254 Text en Copyright © 2013, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by-nc-sa/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/ |
spellingShingle | Article Liu, Gang-Qin Po, Hoi Chun Du, Jiangfeng Liu, Ren-Bao Pan, Xin-Yu Noise-resilient quantum evolution steered by dynamical decoupling |
title | Noise-resilient quantum evolution steered by dynamical decoupling |
title_full | Noise-resilient quantum evolution steered by dynamical decoupling |
title_fullStr | Noise-resilient quantum evolution steered by dynamical decoupling |
title_full_unstemmed | Noise-resilient quantum evolution steered by dynamical decoupling |
title_short | Noise-resilient quantum evolution steered by dynamical decoupling |
title_sort | noise-resilient quantum evolution steered by dynamical decoupling |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3741639/ https://www.ncbi.nlm.nih.gov/pubmed/23912335 http://dx.doi.org/10.1038/ncomms3254 |
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