Fig. 1 | Nature Communications

Fig. 1

From: Ultra-long coherence times amongst room-temperature solid-state spins

Fig. 1

Measuring nitrogen vacancy (NV) centres in phosphorus-doped diamond. a Result of Rabi measurement (data with blue crosses, sinusoidal fit with red line, 37% contrast). b T2 vs NV− population for four samples A–D with different doping levels: 3 × 1015 (red, crosses), 1 × 1016 (blue, circles), 6 × 1016 (green, up-pointing triangles have verified NV− population, down-pointing triangles were added to show more statistics for T2 only, but do likely have the same population), and 1 × 1017 atoms cm−3 (magenta, diamonds). The error bars indicate standard errors. The top right of the graph is enlarged

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