  We demonstrate a spectrally broadband and effcient technique for collecting
photoluminescence from a single InAs quantum dot directly into a standard
single mode optical fiber. In this approach, an optical fiber taper waveguide
is placed in contact with a suspended GaAs nanophotonic waveguide with embedded
quantum dots, forming an effcient and broadband directional coupler with
standard optical fiber input and output. Effcient photoluminescence collection
over a wavelength range of tens of nanometers is demonstrated, and a maximum
collection effciency of 6.05 % (corresponding single photon rate of 3.0 MHz)
into a single mode optical fiber was estimated for a single quantum dot
exciton.
