Optical-nanofiber-based interface for single molecules
  Optical interfaces for quantum emitters are a prerequisite for implementing quantum networks. Here, we couple single molecules to the guided modes of an optical nanofiber. The molecules are embedded within a crystal that provides photostability and, due to the inhomogeneous broadening, a means to spectrally address single molecules. Single molecules are excited and detected solely via the nanofiber interface without the requirement of additional optical access. In this way, we realize a fully fiber-integrated system that is scalable and may become a versatile constituent for quantum hybrid systems. 
Sarah M. Skoff, David Papencordt, Hardy Schauffert, Bernhard C. Bayer,   and Arno Rauschenbeutel
physics.optics cond-mat.mes-hall quant-ph