  Quantum communication networks require on-chip transfer and manipulation of
single particles as well as their interconversion to single photons for
long-range information exchange. Flying excitons propelled by GHz surface
acoustic waves (SAWs) are outstanding messengers to fulfill these requirements.
Here, we demonstrate the acoustic manipulation of single exciton centers
consisting of individual excitons bound to shallow impurities centers embedded
in a semiconductor quantum well. Time-resolved photoluminescence studies show
that the emission intensity and energy from these centers oscillate at the SAW
frequency of 3.5 GHz. Furthermore, these centers can be remotely pumped via
acoustic transport of flying excitons along a quantum well channel over several
microns. Time correlation studies reveal that the centers emit anti-bunched
light, thus acting as single-photon sources operating at GHz frequencies. Our
results pave the way for the exciton-based on-demand manipulation and on-chip
transfer of single excitons at microwave frequencies with a natural photonic
interface.
