Enhanced solid-state multi-spin metrology using dynamical decoupling

We use multi-pulse dynamical decoupling to increase the coherence lifetime (T2) of large numbers of nitrogen-vacancy (NV) electronic spins in room temperature diamond, thus enabling scalable applications of multi-spin quantum information processing and metrology. We realize an order-of-magnitude ext...

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Bibliographic Details
Published inarXiv.org
Main Authors Pham, L M, Bar-Gill, N, Belthangady, C, D Le Sage, Cappellaro, P, Lukin, M D, Yacoby, A, Walsworth, R L
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 30.01.2012
Subjects
Coherence
Data processing
Decoupling
Diamonds
Metrology
Physics - Mesoscale and Nanoscale Physics
Physics - Quantum Physics
Quantum phenomena
Quantum theory
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Summary:We use multi-pulse dynamical decoupling to increase the coherence lifetime (T2) of large numbers of nitrogen-vacancy (NV) electronic spins in room temperature diamond, thus enabling scalable applications of multi-spin quantum information processing and metrology. We realize an order-of-magnitude extension of the NV multi-spin T2 for diamond samples with widely differing spin environments. For samples with nitrogen impurity concentration <~1 ppm, we find T2 > 2 ms, comparable to the longest coherence time reported for single NV centers, and demonstrate a ten-fold enhancement in NV multi-spin sensing of AC magnetic fields.
ISSN:2331-8422
DOI:10.48550/arxiv.1201.5686