  The burgeoning field of nanophotonics has grown to be a major research area,
primarily because of the ability to control and manipulate single quantum
systems (emitters) and single photons on demand. For many years studying
nanophotonic phenomena was limited to traditional semiconductors (including
silicon and GaAs) and experiments were carried out predominantly at cryogenic
temperatures. In the last decade, however, diamond has emerged as a new
contender to study photonic phenomena at the nanoscale. Offering plethora of
quantum emitters that are optically active at room temperature and ambient
conditions, diamond has been exploited to demonstrate super-resolution
microscopy and realize entanglement, Purcell enhancement and other quantum and
classical nanophotonic effects. Elucidating the importance of diamond as a
material, this review will highlight the recent achievements in the field of
diamond nanophotonics, and convey a roadmap for future experiments and
technological advancements.
