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

106 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

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