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Updated: Aug 18, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Energy-time entanglement preservation in plasmon-assisted light transmission
Sylvain Fasel1, Franck Robin, Esteban Moreno
1Group of Applied Physics, University of Geneva, CH-1211 Geneva 4, Switzerland. sylvain.fasel@physics.unige.ch
Abstract:
We report on experimental evidence of the preservation of the energy-time entanglement of a pair of photons after a photon-plasmon-photon conversion. This preservation is observed in two different plasmon conversion experiments, namely, extraordinary optical transmission through subwavelength metallic hole arrays and long range surface plasmon propagation in metallic waveguides. Plasmons are shown to coherently exist at two different times separated by much more than their lifetimes. This kind of entanglement involving light and matter is expected to be useful for future processing and storing of quantum information.

