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Journal Articles Physical Review B: Condensed Matter and Materials Physics (1998-2015) Year : 2013

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.

Dates and versions

hal-00975236 , version 1 (08-04-2014)

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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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