We report on the observation of coupling a single nitrogen vacancy (NV) center in a
nanodiamond crystal to a propagating plasmonic mode of silver nanowires. The nanocrystal
is placed either near the apex of a single silver nanowire or in the gap between two end-to-
end aligned silver nanowires. We observe an enhancement of the NV-centers' decay rate in
both cases as a result of the coupling to the plasmons. The devices are nano-assembled
with a scanning probe technique. Through simulations, we show that end-to-end aligned …