Enhanced solid-state multispin metrology using dynamical decoupling

We use multipulse dynamical decoupling to increase the coherence lifetime (T sub(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...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2012-07, Vol.86 (4), Article 045214
Main Authors: Pham, L. M., Bar-Gill, N., Belthangady, C., Le Sage, D., Cappellaro, P., Lukin, M. D., Yacoby, A., Walsworth, R. L.
Format: Article
Language:English
Subjects:
Coherence
Condensed matter
Decoupling
Diamonds
Electronics
Impurities
Magnetic fields
Metrology
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Summary:We use multipulse dynamical decoupling to increase the coherence lifetime (T sub(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 sub(2) in three diamond samples with widely differing spin impurity environments. In particular, for samples with nitrogen impurity concentration [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.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.86.045214