| Autor: |
Yamamoto, T., Onoda, S., Ohshima, T., Teraji, T., Watanabe, K., Koizumi, S., Umeda, T., McGuinness, L. P., Müller, C., Naydenov, B., Dolde, F., Fedder, H., Honert, J., Markham, M. L., Twitchen, D. J., Wrachtrup, J., Jelezko, F., Isoya, J. |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
Phys. Rev. B 90, 081117 (2014) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.90.081117 |
| Popis: |
Nitrogen impurities help to stabilize the negatively-charged-state of NV$^-$ in diamond, whereas magnetic fluctuations from nitrogen spins lead to decoherence of NV$^-$ qubits. It is not known what donor concentration optimizes these conflicting requirements. Here we used 10-MeV $^{15}$N$^{3+}$ ion implantation to create NV$^-$ in ultrapure diamond. Optically detected magnetic resonance of single centers revealed a high creation yield of $40\pm3$% from $^{15}$N$^{3+}$ ions and an additional yield of $56\pm3$% from $^{14}$N impurities. High-temperature anneal was used to reduce residual defects, and charge stable NV$^-$, even in a dilute $^{14}$N impurity concentration of 0.06 ppb were created with long coherence times. |
| Databáze: |
arXiv |
| Externí odkaz: |
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