Laser writing of coherent colour centres in diamond
Optically active point defects in crystals have gained widespread attention as photonic systems that can find use in quantum information technologies. However challenges remain in the placing of individual defects at desired locations, an essential element of device fabrication. Here we report the c...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Journal article |
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Nature Publishing Group
2016
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| _version_ | 1797093383801405440 |
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| author | Smith, J Chen, Y Salter, P Weng, L Frangeskou, A Stephen, C Ishmael, S Dolan, P Johnson, S Green, B Morley, G Newton, M Rarity, J Booth, M |
| author_facet | Smith, J Chen, Y Salter, P Weng, L Frangeskou, A Stephen, C Ishmael, S Dolan, P Johnson, S Green, B Morley, G Newton, M Rarity, J Booth, M |
| author_sort | Smith, J |
| collection | OXFORD |
| description | Optically active point defects in crystals have gained widespread attention as photonic systems that can find use in quantum information technologies. However challenges remain in the placing of individual defects at desired locations, an essential element of device fabrication. Here we report the controlled generation of single negatively charged nitrogen-vacancy (NV-) centres in diamond using laser writing. Aberration correction in the writing optics allows precise positioning of vacancies within the diamond crystal, and subsequent annealing produces single NV- centres with up to (45 ± 15)% success probability, within about 200 nm of the desired position in the transverse plane. Selected NV- centres display stable, coherent optical transitions at cryogenic temperatures, a pre-requisite for the creation of distributed quantum networks of solid-state qubits. The results illustrate the potential of laser writing as a new tool for defect engineering in quantum technologies, and extend laser processing to the single defect domain. |
| first_indexed | 2024-03-07T03:59:34Z |
| format | Journal article |
| id | oxford-uuid:c413e187-d36c-45a6-bde6-4667e06d2448 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T03:59:34Z |
| publishDate | 2016 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | oxford-uuid:c413e187-d36c-45a6-bde6-4667e06d24482022-03-27T06:20:58ZLaser writing of coherent colour centres in diamondJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c413e187-d36c-45a6-bde6-4667e06d2448Symplectic Elements at OxfordNature Publishing Group2016Smith, JChen, YSalter, PWeng, LFrangeskou, AStephen, CIshmael, SDolan, PJohnson, SGreen, BMorley, GNewton, MRarity, JBooth, MOptically active point defects in crystals have gained widespread attention as photonic systems that can find use in quantum information technologies. However challenges remain in the placing of individual defects at desired locations, an essential element of device fabrication. Here we report the controlled generation of single negatively charged nitrogen-vacancy (NV-) centres in diamond using laser writing. Aberration correction in the writing optics allows precise positioning of vacancies within the diamond crystal, and subsequent annealing produces single NV- centres with up to (45 ± 15)% success probability, within about 200 nm of the desired position in the transverse plane. Selected NV- centres display stable, coherent optical transitions at cryogenic temperatures, a pre-requisite for the creation of distributed quantum networks of solid-state qubits. The results illustrate the potential of laser writing as a new tool for defect engineering in quantum technologies, and extend laser processing to the single defect domain. |
| spellingShingle | Smith, J Chen, Y Salter, P Weng, L Frangeskou, A Stephen, C Ishmael, S Dolan, P Johnson, S Green, B Morley, G Newton, M Rarity, J Booth, M Laser writing of coherent colour centres in diamond |
| title | Laser writing of coherent colour centres in diamond |
| title_full | Laser writing of coherent colour centres in diamond |
| title_fullStr | Laser writing of coherent colour centres in diamond |
| title_full_unstemmed | Laser writing of coherent colour centres in diamond |
| title_short | Laser writing of coherent colour centres in diamond |
| title_sort | laser writing of coherent colour centres in diamond |
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