  This proposal investigates the photon-statistics of light emitted by a
statistical ensemble of cold atoms excited by the near-field of an optical
nanofiber tip. Dipole-dipole interactions of atoms at such short distance from
each other suppress the simultaneous emission of more than one photon and lead
to antibunching of photons. We consider a mean atom number on the order of one
and deal with a poissonian mixture of one and two atoms including dipole-dipole
interactions and collective decay. Time tracks of the atomic states are
simulated in quantum Monte Carlo simulations from which the $g^{(2)}$-photon
autocorrelation function is derived. The general results can be applied to any
statistical ensemble of emitters that are interacting by dipole-dipole
interactions.
