Abstract

Plasmonic antennas are attractive optical structures for many applications in nano and quantum technologies. They have the ability to confine light on highly sub-wavelength volumes to improve significantly light-matter interaction between single quantum emitters and plasmons. By providing enhanced interaction between a nanoemitter and light, they efficiently accelerate and direct spontaneous emission. One challenge, however, is the precise nanoscale positioning of the emitter in the structure [2]. Here we present the realization of a patch plasmonic antenna [2] consisting in a single colloidal core/shell CdSe/CdS deterministically positioned with three-dimensional nanoscale control between a thick gold layer and a thin gold –subwavelenth size –nano disk [3].

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