Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 23, Issue 6, Pages 374-376Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2011.2106488
Keywords
Gold film; nanodiamond; nitrogen-vacancy (NV) color center; surface plasmon
Funding
- National Natural Science Fund [60807027, 10990101]
- National Education Ministry of China [109069]
- Research Fund for the Doctoral Program of Higher Education of China [200802691032]
- Shanghai Municipal Education Commission [09ZZ47]
- SinoGerman Science Center
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Engineering the photo-emission characteristics of single-photon emitters is crucial for the growing field of quantum technologies. We show that the photoluminescence of a single nitrogen-vacancy color center in nanodiamond could be significantly enhanced when attached to a gold film of 50 nm with preserving photophysical properties as a single photon source. The nitrogen-vacancy center on the gold film showed a decreased excited-state lifetime and a modified saturation characteristic. The photoluminescence enhancement was due to the enhanced electric field by the surface plasmon and the energy transfer from the excited state of nitrogen-vacancy centers to the surface plasmon.
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