Enhancement and Inhibition of Spontaneous Photon Emission by Resonant Silicon Nanoantennas

Spin-Polarized Photon Emission by Resonant Multipolar Nanoantennas

We demonstrate nanoscale spin control of photons emitted by an atomic system coupled to a compact plasmonic nanoantenna supporting phase-locked interference of different multipolar moments within a single resonance. Experimentally we observe chiral light emission from quantum dots over split-ring resonant nanoantennas, where the spin of the emitted photons is locked to their transverse momentum...

Enhancement of Silicon Photon Emission with Nanostructure Array

A Raman scattering enhancement factor up to 4.2 normalized with pure silicon has been achieved by applying the electron beam lithography (EBL) technique to build silicon nanostructure array. Several mechanisms are adopted to explain and discuss the enhancement phenomenon . Through the improvement on the adjustability, uniformity, and stability of the structures, it is expected that a more robus...

Ultrafast spontaneous emission source using plasmonic nanoantennas

Typical emitters such as molecules, quantum dots and semiconductor quantum wells have slow spontaneous emission with lifetimes of 1-10 ns, creating a mismatch with high-speed nanoscale optoelectronic devices such as light-emitting diodes, single-photon sources and lasers. Here we experimentally demonstrate an ultrafast (<11 ps) yet efficient source of spontaneous emission, corresponding to an e...

Hybrid nanoantennas for directional emission enhancement

Inhibition, enhancement, and control of spontaneous emission in photonic nanowires.

We experimentally investigate the spontaneous emission (SE) rates of single InAs quantum dots embedded in GaAs photonic nanowires. For a diameter leading to the optimal confinement of the fundamental guided mode HE11, the coupling to HE11 dominates the SE process and an increase of the SE rate by a factor of 1.5 is achieved. When the diameter is decreased, the coupling to this mode vanishes rap...