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arXiv · 2609.11809

Designing metallo-dielectric antennas for cryogenic applications

Siwei Luo·Tim Hebenstreit·Alexey Shkarin·Jan Renger·Tobias Utikal·Stephan Götzinger
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Abstract

We present the design of cryogenic metallo-dielectric antennas tailored to single organic emitters, where the choice of host material imposes specific constraints on the antenna geometry. Using dibenzoterrylene (DBT) in para-dichlorobenzene (p-DCB}) as a model system, we show that photon collection efficiencies exceeding 90% can be achieved for arbitrary dipole orientations of the fluorescent molecule. The antenna design is intrinsically broadband and tolerant to emitter positioning within the structure. We further provide concrete fabrication guidelines for the full antenna architecture, and experimentally demonstrate its operating principle by recording a back-focal-plane image (BFP) of a single molecule inside a fabricated antenna.

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Siwei Luo, Tim Hebenstreit, Alexey Shkarin, Jan Renger, Tobias Utikal, Stephan Götzinger. 2026-09-10. Designing metallo-dielectric antennas for cryogenic applications. https://arxiv.org/abs/2609.11809

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