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6CCVD Research

Level anti-crossing magnetometry with color centers in diamond

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2017-02-20
JournalProceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
AuthorsHuijie Zheng, Georgios Chatzidrosos, Arne Wickenbrock, Lykourgos Bougas, Reinis Lazda
InstitutionsUniversity of California, Berkeley, University of Latvia
Citations16

Abstract

Section titled ā€œAbstractā€

Recent developments in magnetic field sensing with negatively charged nitrogen-vacancy centers (NV) in diamond employ magnetic-field (MF) dependent features in the photoluminescence (PL) and eliminate the need for microwaves (MW). Here, we study two approaches towards improving the magnetometric sensitivity using the ground-state level anti-crossing (GSLAC) feature of the NV center at a background MF of 102.4 mT. Following the first approach, we investigate the feature parameters for precise alignment in a dilute diamond sample; the second approach extends the sensing protocol into absorption via detection of the GSLAC in the diamond transmission of a 1042nm laser beam. This leads to an increase of GSLAC contrast and results in a magnetometer with a sensitivity of 0.45 nT/āˆšHz and a photon shot-noise limited sensitivity of 12.2 pT/āˆšHz.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2015 - Subpicotesla diamond magnetometry
  2. 2016 - DC magnetometry at the T2 limit

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