  Energy transfer between photons and molecules and between neighboring
molecules is ubiquitous in living nature, most prominently in photosynthesis.
While energy transfer is efficiently utilized by living systems, its adoption
to connect individual components in man-made plasmonic nanocircuits has been
challenged by low transfer efficiencies which motivate the development of
entirely new concepts for energy transfer. We introduce herein optoplasmonic
superlenses that combine the capability of optical microcavities to insulate
molecule-photon systems from decohering environmental effects with the superior
light nanoconcentration properties of nanoantennas. The proposed structures
provide significant enhancement of the emitter radiative rate and efficient
long-range transfer of emitted photons followed by subsequent re-focusing into
nanoscale volumes accessible to near- and far-field detection. Optoplasmonic
superlenses are versatile building blocks for optoplasmonic nanocircuits and
can be used to construct "dark" single molecule sensors, resonant amplifiers,
nanoconcentrators, frequency multiplexers, demultiplexers, energy converters
and dynamical switches.
