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

C. J. Stephen; B. L. Green; Y. N. D. Lekhai; L. Weng; P. Hill; S. Johnson; A. C. Frangeskou; P. L. Diggle; Y.-C. Chen; M. J. Strain; E. Gu; M. E. Newton; J. M. Smith; P. S. Salter; G. W. Morley

doi:10.1103/PhysRevApplied.12.064005

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

C. J. Stephen, B. L. Green, Y. N. D. Lekhai, L. Weng, P. Hill, S. Johnson, A. C. Frangeskou, P. L. Diggle, Y.-C. Chen, M. J. Strain, E. Gu, M. E. Newton, J. M. Smith, P. S. Salter, G. W. Morley

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22 Citations (Scopus)

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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.

Original language	English
Article number	064005
Number of pages	13
Journal	Physical Review Applied
Volume	12
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevApplied.12.064005
Publication status	Published - 3 Dec 2019

Keywords

qbit arrays
quantum computing
diamond

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10.1103/PhysRevApplied.12.064005Licence: CC BY 4.0

Stephen-etal-PRA-2019-Deep-three-dimensional-solid-state-qubit-arrays-with-long-livedFinal published version, 4.81 MBLicence: CC BY 4.0

UK Quantum Technology Hub: NQIT - Networked Quantum Information Technologies
Dawson, M., Gu, E., Strain, M. & Watson, I.
EPSRC (Engineering and Physical Sciences Research Council)
1/12/14 → 30/11/19
Project: Research
EPSRC Centre for Doctoral Training in Diamond Science and Technology
Kemp, A., Dziechciarczyk, L. & Hill, P.
EPSRC (Engineering and Physical Sciences Research Council), Element Six (UK) Limited, Fraunhofer UK Research Limited
1/04/14 → 30/09/22
Project: Research - Studentship

Cite this

Stephen, C. J., Green, B. L., Lekhai, Y. N. D., Weng, L., Hill, P., Johnson, S., Frangeskou, A. C., Diggle, P. L., Chen, Y-C., Strain, M. J., Gu, E., Newton, M. E., Smith, J. M., Salter, P. S., & Morley, G. W. (2019). Deep three-dimensional solid-state qubit arrays with long-lived spin coherence. Physical Review Applied, 12(6), [064005]. 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.",

keywords = "qbit arrays, quantum computing, diamond",

author = "Stephen, {C. J.} and Green, {B. L.} and Lekhai, {Y. N. D.} and L. Weng and P. Hill and S. Johnson and Frangeskou, {A. C.} and Diggle, {P. L.} and Y.-C. Chen and Strain, {M. J.} and E. Gu and Newton, {M. E.} and Smith, {J. M.} and Salter, {P. S.} and Morley, {G. W.}",

year = "2019",

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doi = "10.1103/PhysRevApplied.12.064005",

language = "English",

volume = "12",

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AU - Stephen, C. J.

AU - Green, B. L.

AU - Lekhai, Y. N. D.

AU - Weng, L.

AU - Hill, P.

AU - Johnson, S.

AU - Frangeskou, A. C.

AU - Diggle, P. L.

AU - Chen, Y.-C.

AU - Strain, M. J.

AU - Gu, E.

AU - Newton, M. E.

AU - Smith, J. M.

AU - Salter, P. S.

AU - Morley, G. W.

PY - 2019/12/3

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N2 - 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.

AB - 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.

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KW - quantum computing

KW - diamond

U2 - 10.1103/PhysRevApplied.12.064005

DO - 10.1103/PhysRevApplied.12.064005

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JO - Physical Review Applied

JF - Physical Review Applied

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

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Keywords

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Projects

UK Quantum Technology Hub: NQIT - Networked Quantum Information Technologies

EPSRC Centre for Doctoral Training in Diamond Science and Technology

Cite this