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arXiv · 1805.12202

Lead-Related Quantum Emitters in Diamond

Matthew E. Trusheim·Noel H. Wan·Kevin C. Chen·Christopher J. Ciccarino·Ravishankar Sundararaman·Girish Malladi·Eric Bersin·Michael Walsh·Benjamin Lienhard·Hassaram Bakhru·Prineha Narang·Dirk Englund
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Abstract

We report on quantum emission from Pb-related color centers in diamond following ion implantation and high temperature vacuum annealing. First-principles calculations predict a negatively-charged Pb-vacancy center in a split-vacancy configuration, with a zero-phonon transition around 2.3 eV. Cryogenic photoluminescence measurements performed on emitters in nanofabricated pillars reveal several transitions, including a prominent doublet near 520 nm. The splitting of this doublet, 2 THz, exceeds that reported for other group-IV centers. These observations are consistent with the PbV center, which is expected to have the combination of narrow optical transitions and stable spin states, making it a promising system for quantum network nodes.

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Matthew E. Trusheim, Noel H. Wan, Kevin C. Chen, Christopher J. Ciccarino, Ravishankar Sundararaman, Girish Malladi, Eric Bersin, Michael Walsh, Benjamin Lienhard, Hassaram Bakhru, Prineha Narang, Dirk Englund. 2018-05-30. Lead-Related Quantum Emitters in Diamond. https://doi.org/10.1103/physrevb.99.075430

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