Localization of Narrowband Single Photon Emitters in Nanodiamonds
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- 作者：Kerem Bray ; Russell Sandstrom ; Christopher Elbadawi ; Martin Fischer ; Matthias Schreck ; Olga Shimoni ; Charlene Lobo ; Milos Toth ; Igor Aharonovich
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2016
- 出版时间：March 23, 2016
- 年：2016
- 卷：8
- 期：11
- 页码：7590-7594
- 全文大小：283K
- ISSN：1944-8252
文摘
Diamond nanocrystals that host room temperature narrowband single photon emitters are highly sought after for applications in nanophotonics and bioimaging. However, current understanding of the origin of these emitters is extremely limited. In this work, we demonstrate that the narrowband emitters are point defects localized at extended morphological defects in individual nanodiamonds. In particular, we show that nanocrystals with defects such as twin boundaries and secondary nucleation sites exhibit narrowband emission that is absent from pristine individual nanocrystals grown under the same conditions. Critically, we prove that the narrowband emission lines vanish when extended defects are removed deterministically using highly localized electron beam induced etching. Our results enhance the current understanding of single photon emitters in diamond and are directly relevant to fabrication of novel quantum optics devices and sensors.