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On Friday 6th of November we had an inspiring talk from Esteban Bermudez, current member of ICONS, who explained us the work behind his latest publication: Coupling of individual quantum emitters to channel plasmons.
A brief resume of the work is given in the following lines written by Esteban:
Efficient light-matter interaction lies at the heart of many emerging technologies that seek on-chip integration of solid-state photonic systems. Plasmonic waveguides, which guide the radiation in the form of strongly confined surface plasmon-polariton modes, represent a promising solution to manipulate single photons in coplanar architectures with unprecedented small footprints. In this seminar I will show some of our efforts regarding the coupling of quantum emitters to plasmonic waveguide modes. I will demonstrate the deterministic assembly of a nanodiamond containing a single Nitrogen Vacancy (NV) centre into a V-groove (VG) plasmonic waveguide, and coupling of its emission to the channel plasmon polaritons supported by the VG. Theoretical simulations enable us to determine the position and orientation of the quantum emitter for optimum coupling. Concomitantly with these predictions, we demonstrate experimentally that 42% of a single NV centre emission efficiently couples into the supported modes of the V-groove. This work paves the way towards practical realization of efficient and long distance transfer of energy for integrated solid-state quantum systems.
Many questions arised from his talk. For example, https://www.cialissansordonnancefr24.com/cialis-pharmacie/ questions about the influence of the position of the nanodiamonds which are the particles having the NV, or the effect of changing the metal used, or the design of the waveguide.
Esteban showed us short videos where the emission from the NV could be seen, together with emission from the extremes of the waveguide which appear thanks to the propagation of plasmons polaritons within the VG, and the tailored diagonal edges of the VG that allow the light to go out.
Here, the link to his work.
http://www.nature.com/ncomms/2015/150807/ncomms8883/full/ncomms8883.html
We hope you keep participating in our seminars!
