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Magnetometry with nitrogen-vacancy ensembles in diamond based on infrared absorption in a doubly resonant optical cavity

Abstract : We propose using an optical cavity to enhance the sensitivity of a magnetometer relying on the detection of the spin state of a high-density nitrogen-vacancy ensemble in diamond using infrared optical absorption. The role of the cavity is to obtain a contrast in the absorption-detected magnetic resonance approaching unity at room temperature. We project an increase in the photon shot-noise limited sensitivity of two orders of magnitude in comparison with a single-pass approach. Optical losses can limit the enhancement to one order of magnitude, which could still enable room-temperature operation. Finally, the optical cavity also allows us to use less pumping power when the cavity is resonant at both the pump and the infrared probe wavelength.
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https://hal.archives-ouvertes.fr/hal-00975236
Contributor : Yannick Dumeige Connect in order to contact the contributor
Submitted on : Tuesday, April 8, 2014 - 11:21:01 AM
Last modification on : Tuesday, November 29, 2022 - 12:12:15 PM

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Yannick Dumeige, Mayeul Chipaux, Vincent Jacques, François Treussart, Jean-François Roch, et al.. Magnetometry with nitrogen-vacancy ensembles in diamond based on infrared absorption in a doubly resonant optical cavity. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2013, 87, pp.155202. ⟨10.1103/PhysRevB.87.155202⟩. ⟨hal-00975236⟩

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