Towards strong light-matter coupling at the single-resonator level with sub-wavelength mid-infrared nano-antennas

Journal Article · Mon Jul 11 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4958330· OSTI ID:22590591

Malerba, M.; Ongarello, T.; Paulillo, B.; Manceau, J. -M.; Beaudoin, G.; Sagnes, I.

We report a crucial step towards single-object cavity electrodynamics in the mid-infrared spectral range using resonators that borrow functionalities from antennas. Room-temperature strong light-matter coupling is demonstrated in the mid-infrared between an intersubband transition and an extremely reduced number of sub-wavelength resonators. By exploiting 3D plasmonic nano-antennas featuring an out-of-plane geometry, we observed strong light-matter coupling in a very low number of resonators: only 16, more than 100 times better than what reported to date in this spectral range. The modal volume addressed by each nano-antenna is sub-wavelength-sized and it encompasses only ≈4400 electrons.

• OSTI ID: 22590591
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 2 Vol. 109; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANTENNAS
ELECTRODYNAMICS
GEOMETRY
RESONATORS
TEMPERATURE RANGE 0273-0400 K
VISIBLE RADIATION
WAVELENGTHS