  Single-emitter plasmonic patch antennas are room-temperature deterministic
single photon sources, which exhibit highly accelerated and directed single
photon emission. However, for efficient operation these structures require
three-dimensional nanoscale deterministic control of emitter positioning within
the device, which is a demanding task, esp. when emitter damage during
fabrication is a major concern. To overcome this limitation, our deterministic
room-temperature in situ optical lithography protocol uses spatially modulated
light to position a plasmonic structure non-destructively on any selected
single-emitter with three-dimensional nanoscale control. In this paper we
analyze the emission statistics of such plasmonic antennas that embed a
deterministically positioned single colloidal CdSe/CdS quantum dot that
highlight acceleration and brightness of emission. We demonstrate that the
antenna induces a 1000-fold increase in the emitter absorption cross-section,
and under high pumping, these antennas show nonlinearly enhanced emission.
