Jayakumar, H;
Dhomkar, S;
Henshaw, J;
Meriles, CA;
(2018)
Spin readout via spin-to-charge conversion in bulk diamond nitrogen-vacancy ensembles.
Applied Physics Letters
, 113
(12)
, Article 122404. 10.1063/1.5040261.
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Abstract
We demonstrate the optical readout of ensembles of nitrogen-vacancy (NV) center spins in a bulk diamond sample via spin-to-charge conversion. A high power 594 nm laser is utilized to selectively ionize these paramagnetic defects in the mS=0 spin state with a contrast of up to 12%. In comparison to the conventional 520 nm spin readout, the spin-to-charge-conversion-based readout provides a higher signal-to-noise ratio, with tenfold sensing measurement speedup for millisecond long pulse sequences. This level of performance was achieved for an NV− ionization of only 25%, limited by the ionization and readout laser powers. These observations pave the way to a range of high-sensitivity metrology applications where the use of NV− ensembles in bulk diamond has proven useful, including sensing and imaging of target materials overlaid on the diamond surface.
| Type: | Article |
|---|---|
| Title: | Spin readout via spin-to-charge conversion in bulk diamond nitrogen-vacancy ensembles |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/1.5040261 |
| Publisher version: | https://doi.org/10.1063/1.5040261 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10057222 |
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