Enhanced solid-state multispin metrology using dynamical decoupling

L. M. Pham*, N. Bar-Gill, C. Belthangady, D. Le Sage, P. Cappellaro, M. D. Lukin, A. Yacoby, R. L. Walsworth

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

100 Scopus citations

Abstract

We use multipulse dynamical decoupling to increase the coherence lifetime (T 2) of large numbers of nitrogen-vacancy (NV) electronic spins in room temperature diamond, thus enabling scalable applications of multispin quantum information processing and metrology. We realize an order-of-magnitude extension of the NV multispin T 2 in three diamond samples with widely differing spin impurity environments. In particular, for samples with nitrogen impurity concentration 1 ppm, we extend T 2 to >2 ms, comparable to the longest coherence time reported for single NV centers, and demonstrate a tenfold enhancement in NV multispin sensing of ac magnetic fields.

Original languageAmerican English
Article number045214
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume86
Issue number4
DOIs
StatePublished - 24 Jul 2012
Externally publishedYes

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