Sub-nanotesla magnetometry with a fibre-coupled diamond sensor
| Autor: | Angelo Frangeskou, E. C. Nichols, Mark E. Newton, G. A. Stimpson, L. Q. Zhou, Ben Breeze, A. Nikitin, Daniel J. Twitchen, Gavin W. Morley, W. Thornley, Matthew Markham, Andrew M. Edmonds, R. L. Patel, Matthew W. Dale, Ben Green |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Magnetometer FOS: Physical sciences General Physics and Astronomy Diamond Applied Physics (physics.app-ph) 02 engineering and technology Physics - Applied Physics engineering.material 021001 nanoscience & nanotechnology 01 natural sciences law.invention Amplitude Modulation law 0103 physical sciences engineering Sensitivity (control systems) A fibers Atomic physics 010306 general physics 0210 nano-technology Frequency modulation QC Microwave |
| ISSN: | 2331-7019 |
| Popis: | Nitrogen-vacancy centers (NVCs) in diamond are being explored for future quantum technologies, and in particular ensembles of NVC are the basis for sensitive magnetometers. We present a fiber-coupled NVC magnetometer with an unshielded sensitivity of $(310\ifmmode\pm\else\textpm\fi{}20)\phantom{\rule{0.2em}{0ex}}\mathrm{pT}/\sqrt{\mathrm{Hz}}$ in the frequency range of 10--150 Hz at room temperature. This takes advantage of low-strain ${}^{12}\mathrm{C}$ diamond, lenses for fiber coupling and optimization of microwave modulation frequency, modulation amplitude, and power. Fiber coupling means the sensor can be conveniently brought within 2 mm of the object under study. |
| Databáze: | OpenAIRE |
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