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Mr Daniele Palaferri

Antenna Coupled Microcavities for Terahertz Quantum Devices

This research project focuses on the experimental realization of antenna-coupled microcavity devices working in the Terahertz range. This new architecture provides very strong electromagnetic confinement and consistes of an array of connected patch antennas, which collect efficiently photons from the free space and act as resonant microcavities. This concept has been used to realize low noise THz Quantum Well Photodetectors (QWPs), working at a background-limited temperature of 21K and reporting a specific detectivity comparable to the best cryogenic cooled bolometers:

D. Palaferri, Y. Todorov, Y.N. Chen, A. Vasanelli, L. H. Li, A. G. Davies, E.H. Linfield, and C. Sirtori

Patch antenna terahertz photodetectors, Appl. Phys. Lett. Vol. 106, 161102 (2015)


At the later stage, the same architecture will be coupled with a layer at high electronic density, such as highly doped quantum wells and/or graphene, in order to explore the interactions between the collective plasmonic modes and the electronic transport in strong and ultra-strong coupling regime

Contact:         daniele.palaferri@univ-paris-diderot.fr            danielepalaferri@gmail.com