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Photonic Quantum Computing Spin Qubits Silicon Quantum Computing

Broadband magnetometry by infrared-absorption detection of nitrogen-vacancy ensembles in diamond

arXiv
Authors: V. M. Acosta, E. Bauch, A. Jarmola, L. J. Zipp, M. P. Ledbetter, D. Budker

Year

2010

Paper ID

11144

Status

Preprint

Abstract Read

~2 min

Abstract Words

99

Citations

N/A

Abstract

We demonstrate magnetometry by detection of the spin state of high-density nitrogen-vacancy ensembles in diamond using optical absorption at 1042 nm. With this technique, measurement contrast, and collection efficiency can approach unity, leading to an increase in magnetic sensitivity compared to the more common method of collecting red fluorescence. Working at 75 K with a sensor with effective volume 50 times 50 times 300 microns^3, we project photon shot-noise limited sensitivity of 5 pT in one second of acquisition and bandwidth from dc to a few megahertz. Operation in a gradiometer configuration yields a noise floor of 7 nTrms at 110 Hz in one second of acquisition.

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  • This paper contributes to the Photonic Quantum Computing research area in the Quantum Articles archive.
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  • We demonstrate magnetometry by detection of the spin state of high-density nitrogen-vacancy ensembles in diamond using optical absorption at 1042 nm.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1009.4747 [2] arXiv https://arxiv.org/abs/1009.4747 [3] Publisher https://arxiv.org/abs/1009.4747

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