期刊
NEW JOURNAL OF PHYSICS
卷 16, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/16/11/113019
关键词
silicon vacancy center; diamond; isotope; local vibrational mode; phonon sideband; ZPL; silicon
资金
- EU (DIAMANT)
- EU (SIQS)
- EU (DIADEMS)
- EU (EQUAMS)
- ERC
- German Science Foundation-DFG [SFB TR21, FOR1482, FOR1493]
- JST
- JSPS KAKENHI [26246001]
- DARPA
- Sino-German Center
- VW Stiftung
- ARC (EQUS)
- Grants-in-Aid for Scientific Research [26246001] Funding Source: KAKEN
The silicon-vacancy centre (SiV-) in diamond has exceptional spectral properties for single-emitter quantum information applications. Most of the fluorescence is concentrated in a strong zero phonon line (ZPL), with a weak phonon sideband extending for 100 nm that contains several clear features. We demonstrate that the ZPL position can be used to reliably identify the silicon isotope present in a single SiV- centre. This is of interest for quantum information applications since only the Si-29 isotope has nuclear spin. In addition, we show that the sharp 64 meV phonon peak is due to a local vibrational mode of the silicon atom. The presence of a local mode suggests a plausible origin of the measured isotopic shift of the ZPL.
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