Decoherence of ensembles of nitrogen-vacancy centers in diamond

Erik Bauch, Swati Singh, Junghyun Lee, Connor A. Hart, Jennifer M. Schloss, Matthew J. Turner, John F. Barry, Linh M. Pham, Nir Bar-Gill, Susanne F. Yelin, Ronald L. Walsworth*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

83 Scopus citations


We present a combined theoretical and experimental study of solid-state spin decoherence in an electronic spin bath, focusing specifically on ensembles of nitrogen-vacancy (NV) centers in diamond and the associated substitutional nitrogen spin bath. We perform measurements of NV spin free-induction decay (FID) times T2∗ and spin-echo coherence times T2 in 25 diamond samples with nitrogen concentrations [N] ranging from 0.01 to 300 ppm. We introduce a microscopic model and perform numerical simulations to quantitatively explain the degradation of both T2∗ and T2 over four orders of magnitude in [N]. Our analysis enables us to describe the NV ensemble spin coherence decay shapes as emerging consistently from the contribution of many individual NV centers.

Original languageAmerican English
Article number134210
JournalPhysical Review B
Issue number13
StatePublished - 23 Oct 2020

Bibliographical note

Funding Information:
We acknowledge fruitful discussion with Joonhee Choi and Soonwon Choi. We thank Evans Analytical Group (EAG) Laboratories for the secondary ion mass spectroscopy measurements of nitrogen concentration. This material is based upon work supported by, or in part by, the US Army Research Laboratory and the U.S. Army Research Office under Grant No. W911NF1510548; the NSF Electronics, Photonics, and Magnetic Devices program under Grant No. ECCS-1408075; the NSF Physics of Living Systems program under Grant No. PHY-1504610; the Integrated NSF Support Promoting Interdisciplinary Research and Education program under Grant No. EAR-1647504; and Lockheed Martin under Grant No. A32198. This work was performed in part at the Center for Nanoscale Systems, a member of the National Nanotechnology Coordinated Infrastructure Network, which is supported by the NSF under Grant No. 1541959. J.M.S. was supported by a Fannie and John Hertz Foundation Graduate Fellowship and a NSF Graduate Research Fellowship under Grant No. 1122374.

Publisher Copyright:
© 2020 American Physical Society.


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