Long coherence time of spin qubits in $^{12}$C enriched polycrystalline CVD diamond

K. D. Jahnke; B. Naydenov; T. Teraji; S. Koizumi; T. Umeda; J. Isoya; F. Jelezko

doi:10.1063/1.4731778

Long coherence time of spin qubits in $^{12}$C enriched polycrystalline CVD diamond

Quantum Physics 2015-06-05 v1 Mesoscale and Nanoscale Physics

Authors: K. D. Jahnke , B. Naydenov , T. Teraji , S. Koizumi , T. Umeda , J. Isoya , F. Jelezko

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Abstract

Single defects in diamond and especially negatively charged nitrogen vacancy (NV) centers are very promising quantum systems with wide applications in physics and biology. It was shown that their coherence properties can be strongly improved by growing ultrapure diamond with low concentration of parasitic spins associated with nitrogen electron spins and nuclear spins related to $^{13}$ C carbon isotope. Here we report a high quality $^{12}$ C-enriched polycrystalline CVD diamond material with properties comparable with single crystals. We find single NVs in the grains of this material, which show extremely long electron spin coherence time $T_2 > 2\,ms$ .

Keywords

Spin qubits NV centers Diamond Coherence time $^{12}$C enriched Polycrystalline CVD Quantum systems Electron spin

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@article{arxiv.1206.4260,
  title  = {Long coherence time of spin qubits in $^{12}$C enriched polycrystalline CVD diamond},
  author = {K. D. Jahnke and B. Naydenov and T. Teraji and S. Koizumi and T. Umeda and J. Isoya and F. Jelezko},
  journal= {arXiv preprint arXiv:1206.4260},
  year   = {2015}
}

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Accepted for publication in APL

Long coherence time of spin qubits in $^{12}$C enriched polycrystalline CVD diamond

Abstract

Keywords

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