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Deep three-dimensional solid-state qubit arrays with long-lived spin coherence

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Stephen, Colin J., Green, Ben, Lekhai, Yashna, Weng, L., Hill, P. (Peter), Johnson, S., Frangeskou, Angelo, Diggle, Phil L., Chen, Y.-C., Strain, M. J., Gu, E., Newton, Mark E., Smith, J. M., Salter, P. S. and Morley, Gavin (2019) Deep three-dimensional solid-state qubit arrays with long-lived spin coherence. Physical Review Applied, 12 (6). 064005. doi:10.1103/PhysRevApplied.12.064005 ISSN 2331-7019.

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Official URL: https://doi.org/10.1103/PhysRevApplied.12.064005

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Abstract

Nitrogen-vacancy centers (NVCs) in diamond show promise for quantum computing, communication, and sensing. However, the best current method for entangling two NVCs requires that each one is in a separate cryostat, which is not scalable. We show that single NVCs can be laser written 6–15-µm deep inside of a diamond with spin coherence times that are an order of magnitude longer than previous laser-written NVCs and at least as long as naturally occurring NVCs. This depth is suitable for integration with solid immersion lenses or optical cavities and we present depth-dependent T2 measurements. 200 000 of these NVCs would fit into one diamond.

Item Type: Journal Article
Subjects: Q Science > QE Geology
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TN Mining engineering. Metallurgy
T Technology > TP Chemical technology
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Nanophotonics, Diamonds, Annealing of crystals
Journal or Publication Title: Physical Review Applied
Publisher: American Physical Society
ISSN: 2331-7019
Official Date: 3 December 2019
Dates:
DateEvent
3 December 2019Published
3 December 2019Accepted
Volume: 12
Number: 6
Article Number: 064005
DOI: 10.1103/PhysRevApplied.12.064005
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 5 February 2020
Date of first compliant Open Access: 20 February 2020
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIED[RS] Royal Societyhttp://dx.doi.org/10.13039/501100000288
UNSPECIFIEDFraunhofer-Gesellschafthttp://dx.doi.org/10.13039/501100003185
EP/L015315/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
EP/M013243/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
EP/R004803/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
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