Nitrogen-vacancy ensemble magnetometry based on pump absorption

Sepehr Ahmadi; Haitham A. R. El-Ella; Adam M. Wojciechowski; Tobias Gehring; Jørn Otto Bindslev Hansen; Alexander Huck; Ulrik Lund Andersen

doi:10.1103/PhysRevB.97.024105

Nitrogen-vacancy ensemble magnetometry based on pump absorption

Sepehr Ahmadi^*, Haitham A. R. El-Ella, Adam M. Wojciechowski, Tobias Gehring, Jørn Otto Bindslev Hansen, Alexander Huck, Ulrik Lund Andersen

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

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 ∼100 nT/√Hz spanning a bandwidth up to 125 Hz. We project a photon shot-noise-limited sensitivity of ∼1 pT/√Hz by optimizing the nitrogen-vacancy concentration and the detection method.

Original language	English
Article number	024105
Journal	Physical Review B
Volume	97
Issue number	2
Number of pages	6
ISSN	1098-0121
DOIs	https://doi.org/10.1103/PhysRevB.97.024105
Publication status	Published - 2018

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title = "Nitrogen-vacancy ensemble magnetometry based on pump absorption",

abstract = "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 ∼100 nT/√Hz spanning a bandwidth up to 125 Hz. We project a photon shot-noise-limited sensitivity of ∼1 pT/√Hz by optimizing the nitrogen-vacancy concentration and the detection method.",

author = "Sepehr Ahmadi and El-Ella, {Haitham A. R.} and Wojciechowski, {Adam M.} and Tobias Gehring and Hansen, {J{\o}rn Otto Bindslev} and Alexander Huck and Andersen, {Ulrik Lund}",

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T1 - Nitrogen-vacancy ensemble magnetometry based on pump absorption

AU - Ahmadi, Sepehr

AU - El-Ella, Haitham A. R.

AU - Wojciechowski, Adam M.

AU - Gehring, Tobias

AU - Hansen, Jørn Otto Bindslev

AU - Huck, Alexander

AU - Andersen, Ulrik Lund

PY - 2018

Y1 - 2018

N2 - 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 ∼100 nT/√Hz spanning a bandwidth up to 125 Hz. We project a photon shot-noise-limited sensitivity of ∼1 pT/√Hz by optimizing the nitrogen-vacancy concentration and the detection method.

AB - 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 ∼100 nT/√Hz spanning a bandwidth up to 125 Hz. We project a photon shot-noise-limited sensitivity of ∼1 pT/√Hz by optimizing the nitrogen-vacancy concentration and the detection method.

U2 - 10.1103/PhysRevB.97.024105

DO - 10.1103/PhysRevB.97.024105

M3 - Journal article

SN - 1098-0121

VL - 97

JO - Physical Review B

JF - Physical Review B

IS - 2

M1 - 024105

ER -

Nitrogen-vacancy ensemble magnetometry based on pump absorption

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