Letter

Research on the common mode suppression method of temperature noise in an NV color center spin magnetometer

, , , , , , and

Published 23 September 2021 © 2021 Astro Ltd
, , Citation Shaozhuo Lin et al 2021 Laser Phys. Lett. 18 115201 DOI 10.1088/1612-202X/ac26cd

1612-202X/18/11/115201

Abstract

In this paper, two symmetrical magnetic formants in a nitrogen-vacancy (NV) ensemble are used to detect the two symmetrical spin states independently by means of microwave modulation and demodulation and frequency locking. Through the method of differential common mode cancellation, the spin information noise caused by temperature can be suppressed, and the measurement sensitivity of the NV magnetometer can be improved. In the experiment, a double formant magnetic detection system is built. By giving the same feedback to two symmetrical magnetic formants, we achieve differential common mode cancellation. From the experimental results, the temperature noise is reduced by 10 times, and the magnetic field sensitivity is increased from 126.8 pT Hz−1/2 to 13 pT Hz−1/2. The research realizes the suppression of temperature noise for the NV color center spin magnetometer, which provides technical support for improving the sensitivity and bandwidth of magnetometers.

Export citation and abstract BibTeX RIS

Access this article

The computer you are using is not registered by an institution with a subscription to this article. Please choose one of the options below.

Login

IOPscience login

Find out more about journal subscriptions at your site.

Purchase from

Article Galaxy
CCC RightFind

Purchase this article from our trusted document delivery partners.

Make a recommendation

To gain access to this content, please complete the Recommendation Form and we will follow up with your librarian or Institution on your behalf.

For corporate researchers we can also follow up directly with your R&D manager, or the information management contact at your company. Institutional subscribers have access to the current volume, plus a 10-year back file (where available).

10.1088/1612-202X/ac26cd