  We demonstrate a method of tuning a semiconductor quantum dot (QD) onto
resonance with a cavity mode all-optically. We use a system comprised of two
evanescently coupled cavities containing a single QD. One resonance of the
coupled cavity system is used to generate a cavity enhanced optical Stark
shift, enabling the QD to be resonantly tuned to the other cavity mode. A
twenty-seven fold increase in photon emission from the QD is measured when the
off-resonant QD is Stark shifted into the cavity mode resonance, which is
attributed to radiative enhancement of the QD. A maximum tuning of 0.06 nm is
achieved for the QD at an incident power of 88 {\mu}W.
