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 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 are analyzed. It is demonstrated that the presented antenna induces a 1000-fold effective increase in the absorption cross-section, and under high pumping, these antennas show nonlinearly enhanced emission. This article is protected by copyright. All rights reserved.
Efficient Single-Emitter Plasmonic Patch Antenna Fabrication by Deterministic in Situ Optical Lithography using Spatially Modulated Light