Subradiance-enhanced excitation transfer between dipole-coupled nanorings of quantum emitters
Subradiance-enhanced excitation transfer between dipole-coupled nanorings of quantum emitters
A ring of dipole-coupled quantum emitters positioned at subwavelength distances possesses only a few radiant but many subradiant collective excitations with lifetimes growing exponentially with the atom number. These exhibit a three-dimensionally confined spatial radiation field pattern and form nanoscale high-$Q$ optical resonators. Tailoring size, orientation, and distance between two …