  Realizing ordered and spectrally uniform single photon source arrays
integrable on-chip with light manipulating elements in scalable architecture
lies at the core of building monolithic quantum optical circuits (QOCs). We
demonstrate here a spatially-ordered 5 x 8 array of surface-curvature driven
mesa-top GaAs(001)/InGaAs/GaAs single quantum dots (MTSQDs) that exhibit highly
pure (~99% ) single photon emission as deduced from the measured g(2)(0) < 0.02
at 9.4K. Polarization-independent and polarization-resolved high resolution
photoluminescence (PL) measurements show that these ordered and spectrally
uniform QDs have neutral exciton emission with intrinsic linewidth ~ 10 ueV and
fine structure splitting < 10 ueV, an important figure of merit for the use of
QDs in QOCs. The findings point to the high potential of such MTSQD based
single photon source arrays as a promising platform for on-chip scalable
integration with light manipulating units (connected resonant cavity,
waveguide, beam splitter, etc.) to enable constructing QOCs.
