Extension of the Coherence Time by Generating MW Dressed States in a Single NV Centre in Diamond

Nitrogen-vacancy (NV) centres in diamond hold promise in quantum sensing applications. A major interest in them is an enhancement of their sensitivity by the extension of the coherence time (T(2)). In this report, we experimentally generated more than four dressed states in a single NV centre in dia...

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Detalles Bibliográficos
Autores principales: Morishita, H., Tashima, T., Mima, D., Kato, H., Makino, T., Yamasaki, S., Fujiwara, M., Mizuochi, N.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6746786/
https://www.ncbi.nlm.nih.gov/pubmed/31527609
http://dx.doi.org/10.1038/s41598-019-49683-z
Descripción
Sumario:Nitrogen-vacancy (NV) centres in diamond hold promise in quantum sensing applications. A major interest in them is an enhancement of their sensitivity by the extension of the coherence time (T(2)). In this report, we experimentally generated more than four dressed states in a single NV centre in diamond based on Autler-Townes splitting (ATS). We also observed the extension of the coherence time to T(2) ~ 1.5 ms which is more than two orders of magnitude longer than that of the undressed states. As an example of a quantum application using these results we propose a protocol of quantum sensing, which shows more than an order of magnitude enhancement in the sensitivity.

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