Variance properties of the microwave absorption spectrum of an ensemble of nitrogen vacancy centers in diamond

R. A. Chelly; T. Chang; I. Holzman; T. Cohen; J. Kantorovitsch; M. Stern

doi:10.1209/0295-5075/ad116d

Variance properties of the microwave absorption spectrum of an ensemble of nitrogen vacancy centers in diamond

R. A. Chelly, T. Chang, I. Holzman, T. Cohen, J. Kantorovitsch, M. Stern

Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

Abstract

This work presents an original method based on the variance properties of the microwave absorption spectrum of an ensemble of nitrogen vacancy centers in diamond. The spectrum is measured optically. A compact and simple device is designed to optimize the photon collection. We conduct a quantitative comparison of the ensemble's optical signal in both the visible and near infrared range. Using the enhanced signal-to-noise ratio achieved through the device geometry we perform real-time DC magnetometry at moderate light and microwave powers. Under these conditions, the amplitude of a DC magnetic field can be extracted from the variance of the microwave absorption spectrum in a fast and reproducible manner, without the burden of complex fitting techniques.

Original language	English
Article number	56002
Number of pages	8
Journal	EPL
Volume	144
Issue number	5
DOIs	https://doi.org/10.1209/0295-5075/ad116d
State	Published - Dec 2023

Bibliographical note

Publisher Copyright:
Copyright © 2023 EPLA.

Funding

We thank E. Buks for fruitful discussions, D. Doek for polishing the diamond sides, M. Feldberg and T. Sharabi for sputtering the metal used in our SRR, Y. Elbaz for design on solidworks, and M. Oksman for his technical support. This research was supported by the Israeli Science Foundation under grant Nos. 898/19 and 963/19.

Funders	Funder number
Israel Science Foundation	963/19, 898/19

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AU - Stern, M.

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Variance properties of the microwave absorption spectrum of an ensemble of nitrogen vacancy centers in diamond

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