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Neutral silicon-vacancy center in diamond : spin polarization and lifetimes
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Green, Ben, Mottishaw, Sinead, Breeze, Ben, Edmonds, A. M., D'Haenens-Johansson, U. F. S., Doherty, M. W., Williams, S. D., Twitchen, D. J. and Newton, Mark E. (2017) Neutral silicon-vacancy center in diamond : spin polarization and lifetimes. Physical Review Letters, 119 (9). 096402. doi:10.1103/PhysRevLett.119.096402 ISSN 0031-9007.
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Official URL: http://doi.org/10.1103/PhysRevLett.119.096402
Abstract
We demonstrate optical spin polarization of the neutrally charged silicon-vacancy defect in diamond (SiV^{0}), an S=1 defect which emits with a zero-phonon line at 946 nm. The spin polarization is found to be most efficient under resonant excitation, but nonzero at below-resonant energies. We measure an ensemble spin coherence time T_{2}>100 μs at low-temperature, and a spin relaxation limit of T_{1}>25 s. Optical spin-state initialization around 946 nm allows independent initialization of SiV^{0} and NV^{-} within the same optically addressed volume, and SiV^{0} emits within the telecoms down-conversion band to 1550 nm: when combined with its high Debye-Waller factor, our initial results suggest that SiV^{0} is a promising candidate for a long-range quantum communication technology.
| Item Type: | Journal Article | |||||||||
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| Subjects: | Q Science > QC Physics | |||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||
| SWORD Depositor: | Library Publications Router | |||||||||
| Library of Congress Subject Headings (LCSH): | Diamond crystals -- Defects, Polarization (Nuclear physics) | |||||||||
| Journal or Publication Title: | Physical Review Letters | |||||||||
| Publisher: | American Physical Society | |||||||||
| ISSN: | 0031-9007 | |||||||||
| Official Date: | 1 September 2017 | |||||||||
| Dates: |
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| Volume: | 119 | |||||||||
| Number: | 9 | |||||||||
| Article Number: | 096402 | |||||||||
| DOI: | 10.1103/PhysRevLett.119.096402 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||
| Date of first compliant deposit: | 4 May 2018 | |||||||||
| Date of first compliant Open Access: | 4 May 2018 | |||||||||
| RIOXX Funder/Project Grant: |
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