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.
@article{arxiv.2110.07089,
title = {Efficient single-emitter plasmonic patch antenna fabrication by novel deterministic in situ optical lithography using spatially modulated light},
author = {Amit Raj Dhawan and Michel Nasilowski and Zhiming Wang and Benoît Dubertret and Agnès Maître},
journal= {arXiv preprint arXiv:2110.07089},
year = {2021}
}