Coherence of nitrogen-vacancy electronic spin ensembles in diamond
Name
Stanwix-2010-Coherence of nitroge.pdf
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Author(s)
Stanwix, P. L.
Pham, L. M.
Maze, Jeronimo R.
Le Sage, David
Yeung, T. K.
Cappellaro, Paola
Hemmer, P. R.
Yacoby, A.
Lukin, M. D.
Walsworth, R. L.
Date Issued
November 2010
Journal
Physical Review B
Publisher
American Physical Society
Citation
Stanwix, P. L. et al. “Coherence of Nitrogen-vacancy Electronic Spin Ensembles in Diamond.” Physical Review B 82.20 (2010) : 201201. © 2010 The American Physical Society
Version
Final published version
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 (T[superscript 2]) comparable to that of single NV with T[superscript 2]>600 μs for a sample with natural abundance of [superscript 13]C and paramagnetic impurity density ~10[superscript 15] cm[superscript −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 [superscript 13]C 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.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
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DOI of Published Version
https://doi.org/10.1103/PhysRevB.82.201201
