  Strong-field photoemission from metal nanostructures enabled fundamental
discoveries recently. Here, we deliver theoretical demonstration of the
electric field control of electrons in the closest nanoscale vicinity of
plasmonic nanoparticles with the help of few-cycle laser waveforms. We analyze
the effect of plasmonic resonance on photoemission properties and show that it
is only off-resonant nanoparticles that can provide electron control on a true
sub-fs timescale.
