Efficient single-emitter plasmonic patch antenna fabrication by deterministic in situ optical lithography using spatially modulated light

Amit Raj Dhawan (1, 2, 3) , Michel Nasilowski , Zhiming Wang , Benoît Dubertret , Agnès Maitre (4, 2, 3)

1 University of Oxford
2 INSP - Institut des Nanosciences de Paris
3 INSP-E4 - Nanostructures et optique
4 SU - Sorbonne Université

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 of the emitter absorption cross-section, and under high pumping, these antennas show nonlinearly enhanced emission.

Domaines: Optique [physics.optics]; Physique Quantique [quant-ph]; Electromagnétisme; Optique / photonique

Amit Raj Dhawan, Michel Nasilowski, Zhiming Wang, Benoît Dubertret, Agnès Maitre. Efficient single-emitter plasmonic patch antenna fabrication by deterministic in situ optical lithography using spatially modulated light. 2021. ⟨hal-03376851⟩