Single-Spin Magnetometry with Multipulse Sensing Sequences

TitleSingle-Spin Magnetometry with Multipulse Sensing Sequences
Publication TypeJournal Article
Year of Publication2011
Authorsde Lange G, Riste D, Dobrovitski VV, Hanson R
Journal TitlePhysical Review Letters
Date Published02
Type of ArticleArticle
ISBN Number0031-9007
Accession NumberISI:000287714900005
Keywordsdiamond, MAGNETIC-RESONANCE, sensitivity

We experimentally demonstrate single-spin magnetometry with multipulse sensing sequences. The use of multipulse sequences can greatly increase the sensing time per measurement shot, resulting in enhanced ac magnetic field sensitivity. We theoretically derive and experimentally verify the optimal number of sensing cycles, for which the effects of decoherence and increased sensing time are balanced. We perform these experiments for oscillating magnetic fields with fixed phase as well as for fields with random phase. Finally, by varying the phase and frequency of the ac magnetic field, we measure the full frequency-filtering characteristics of different multipulse schemes and discuss their use in magnetometry applications.

URL<Go to ISI>://000287714900005
Alternate JournalPhys. Rev. Lett.