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Excitation and coherent control of spin qudit modes in silicon carbide at room temperature

One of the challenges in the field of quantum sensing and information processing is to selectively address and coherently manipulate highly homogeneous qubits subject to external perturbations. Here, we present room-temperature coherent control of high-dimensional quantum bits, the so-called qudits,...

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Autores principales: Soltamov, V. A., Kasper, C., Poshakinskiy, A. V., Anisimov, A. N., Mokhov, E. N., Sperlich, A., Tarasenko, S. A., Baranov, P. G., Astakhov, G. V., Dyakonov, V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6459825/
https://www.ncbi.nlm.nih.gov/pubmed/30975985
http://dx.doi.org/10.1038/s41467-019-09429-x
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author Soltamov, V. A.
Kasper, C.
Poshakinskiy, A. V.
Anisimov, A. N.
Mokhov, E. N.
Sperlich, A.
Tarasenko, S. A.
Baranov, P. G.
Astakhov, G. V.
Dyakonov, V.
author_facet Soltamov, V. A.
Kasper, C.
Poshakinskiy, A. V.
Anisimov, A. N.
Mokhov, E. N.
Sperlich, A.
Tarasenko, S. A.
Baranov, P. G.
Astakhov, G. V.
Dyakonov, V.
author_sort Soltamov, V. A.
collection PubMed
description One of the challenges in the field of quantum sensing and information processing is to selectively address and coherently manipulate highly homogeneous qubits subject to external perturbations. Here, we present room-temperature coherent control of high-dimensional quantum bits, the so-called qudits, associated with vacancy-related spins in silicon carbide enriched with nuclear spin-free isotopes. In addition to the excitation of a spectrally narrow qudit mode at the pump frequency, several other modes are excited in the electron spin resonance spectra whose relative positions depend on the external magnetic field. We develop a theory of multipole spin dynamics and demonstrate selective quantum control of homogeneous spin packets with sub-MHz spectral resolution. Furthermore, we perform two-frequency Ramsey interferometry to demonstrate absolute dc magnetometry, which is immune to thermal noise and strain inhomogeneity.
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spelling pubmed-64598252019-04-15 Excitation and coherent control of spin qudit modes in silicon carbide at room temperature Soltamov, V. A. Kasper, C. Poshakinskiy, A. V. Anisimov, A. N. Mokhov, E. N. Sperlich, A. Tarasenko, S. A. Baranov, P. G. Astakhov, G. V. Dyakonov, V. Nat Commun Article One of the challenges in the field of quantum sensing and information processing is to selectively address and coherently manipulate highly homogeneous qubits subject to external perturbations. Here, we present room-temperature coherent control of high-dimensional quantum bits, the so-called qudits, associated with vacancy-related spins in silicon carbide enriched with nuclear spin-free isotopes. In addition to the excitation of a spectrally narrow qudit mode at the pump frequency, several other modes are excited in the electron spin resonance spectra whose relative positions depend on the external magnetic field. We develop a theory of multipole spin dynamics and demonstrate selective quantum control of homogeneous spin packets with sub-MHz spectral resolution. Furthermore, we perform two-frequency Ramsey interferometry to demonstrate absolute dc magnetometry, which is immune to thermal noise and strain inhomogeneity. Nature Publishing Group UK 2019-04-11 /pmc/articles/PMC6459825/ /pubmed/30975985 http://dx.doi.org/10.1038/s41467-019-09429-x 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
Soltamov, V. A.
Kasper, C.
Poshakinskiy, A. V.
Anisimov, A. N.
Mokhov, E. N.
Sperlich, A.
Tarasenko, S. A.
Baranov, P. G.
Astakhov, G. V.
Dyakonov, V.
Excitation and coherent control of spin qudit modes in silicon carbide at room temperature
title Excitation and coherent control of spin qudit modes in silicon carbide at room temperature
title_full Excitation and coherent control of spin qudit modes in silicon carbide at room temperature
title_fullStr Excitation and coherent control of spin qudit modes in silicon carbide at room temperature
title_full_unstemmed Excitation and coherent control of spin qudit modes in silicon carbide at room temperature
title_short Excitation and coherent control of spin qudit modes in silicon carbide at room temperature
title_sort excitation and coherent control of spin qudit modes in silicon carbide at room temperature
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6459825/
https://www.ncbi.nlm.nih.gov/pubmed/30975985
http://dx.doi.org/10.1038/s41467-019-09429-x
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