Decoherence of ensembles of nitrogen-vacancy centers in diamond
| Autor: | Erik Bauch, Susanne Yelin, Matthew Turner, Swati Singh, Ronald L. Walsworth, Junghyun Lee, Jennifer Schloss, Connor A. Hart, Linh M. Pham, John Barry, Nir Bar-Gill |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Quantum decoherence chemistry.chemical_element Diamond 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Nitrogen 3. Good health chemistry Vacancy defect 0103 physical sciences engineering Electronic spin Atomic physics 010306 general physics 0210 nano-technology |
| Zdroj: | Physical Review B. 102 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.102.134210 |
| Popis: | We present a combined theoretical and experimental study of solid-state spin decoherence in an electronic spin bath, focusing specifically on ensembles of nitrogen-vacancy (NV) centers in diamond and the associated substitutional nitrogen spin bath. We perform measurements of NV spin free-induction decay (FID) times ${T}_{2}^{*}$ and spin-echo coherence times ${T}_{2}$ in 25 diamond samples with nitrogen concentrations [N] ranging from 0.01 to 300 ppm. We introduce a microscopic model and perform numerical simulations to quantitatively explain the degradation of both ${T}_{2}^{*}$ and ${T}_{2}$ over four orders of magnitude in [N]. Our analysis enables us to describe the NV ensemble spin coherence decay shapes as emerging consistently from the contribution of many individual NV centers. |
| Databáze: | OpenAIRE |
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