Nitrogen-vacancy ensemble magnetometry based on pump absorption

Sepehr Ahmadi

doi:10.1103/PhysRevB.97.024105

2018-01-11

Sepehr Ahmadi *

Haitham A. R. El-Ella

Adam M. Wojciechowski

DOI：10.1103/PhysRevB.97.024105

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摘要

En 中文

We demonstrate magnetic-field sensing using an ensemble of nitrogen-vacancy centers by recording the variation in the pump-light absorption due to the spin-polarization dependence of the total ground-state population. Using a 532 nm pump laser, we measure the absorption of native nitrogen-vacancy centers in a chemical-vapor-deposited diamond placed in a resonant optical cavity. For a laser pump power of 0.4 W and a cavity finesse of 45, we obtain a noise floor of similar to 100 nT/root Hz spanning a bandwidth up to 125 Hz. We project a photon shot-noise-limited sensitivity of similar to 1 pT/root Hz by optimizing the nitrogen-vacancy concentration and the detection method.

Keyword:

DIAMOND WAVE-GUIDE

CENTERS

SPECTROSCOPY

PHYSICS

SPINS

CELL

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期刊

Physical Review B

IF:

3.7

论文数:

15.4W

被引数:

41.0W

机构

technical university of denmark

学者数:

2.6W

论文数: 2.8W

被引数: 37

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