期刊
PHYSICAL REVIEW LETTERS
卷 114, 期 14, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.145502
关键词
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资金
- NSF
- CUA
- DARPA Quiness program
- AFOSR MURI
- Australian Research Council
- Gordon and Betty Moore Foundation
- Element Six
- Alexander von Humboldt Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1205923, 1205635, 1125846] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1521560, 0969816] Funding Source: National Science Foundation
We report direct measurement of population dynamics in the excited state manifold of a nitrogen-vacancy (NV) center in diamond. We quantify the phonon-induced mixing rate and demonstrate that it can be completely suppressed at low temperatures. Further, we measure the intersystem crossing (ISC) rate for different excited states and develop a theoretical model that unifies the phonon-induced mixing and ISC mechanisms. We find that our model is in excellent agreement with experiment and that it can be used to predict unknown elements of the NV center's electronic structure. We discuss the model's implications for enhancing the NV center's performance as a room-temperature sensor.
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