Coherence of nitrogen-vacancy electronic spin ensembles in diamond Academic Article uri icon

abstract

  • We present an experimental and theoretical study of electronic spin decoherence in ensembles of nitrogen-vacancy (NV) color centers in bulk high-purity diamond at room temperature. Under appropriate conditions, we find ensemble NV spin coherence times (T2) comparable to that of single NV with T2 >600s for a sample with natural abundance of C 13 and paramagnetic impurity density 1015 cm-3. We also observe a sharp decrease in the coherence time with misalignment of the static magnetic field relative to the NV electronic spin axis, consistent with theoretical modeling of NV coupling to a C 13 nuclear-spin bath. The long coherence times and increased signal-to-noise provided by room-temperature NV ensembles will aid many applications of NV centers in precision magnetometry and quantum information. 2010 The American Physical Society.

published proceedings

  • Physical Review B

altmetric score

  • 6

author list (cited authors)

  • Stanwix, P. L., Pham, L. M., Maze, J. R., Le Sage, D., Yeung, T. K., Cappellaro, P., ... Walsworth, R. L.

citation count

  • 201

complete list of authors

  • Stanwix, PL||Pham, LM||Maze, JR||Le Sage, D||Yeung, TK||Cappellaro, P||Hemmer, PR||Yacoby, A||Lukin, MD||Walsworth, RL

publication date

  • November 2010