2013/05/31 by Levi P. Neukirch, Jan Gieseler, Romain Quidant +2 · 1 citation
Physics and Astronomy · #physics.optics #quant-ph
paper · pdf · doi:10.1364/ol.38.002976
published as Optics Letters, Vol. 38, Issue 16, 2976-2979 (2013) · Updated to published version appearing in Optics Letters
arxiv created 2013/08/07 · arxiv updated 2013/08/08
We present the first evidence of nitrogen vacancy (NV) photoluminescence from a nanodiamond suspended in a free-space optical dipole trap at atmospheric pressure. The photoluminescence rates are shown to decrease with increasing trap laser power, but are inconsistent with a thermal quenching process. For a continuous-wave trap, the neutral charge state (NV0) appears to be suppressed. Chopping the trap laser yields higher total count rates and results in a mixture of both NV0 and the negative charge state (NV-).