Plasmonics, in which optical waves hybridize with electronic waves in metals, offer the unique capability to confine light at deep-sub-wavelength scales and in turn dramatically enhance light/matter interactions. We will use plasmonic nanostructures to amplify the optical interactions of quantum defects in diamond. Intriguingly, for such defects, the barrier preventing quantum communication at room temperature is not diminished quantum coherence. Rather, it is the diminished optical coherence of the emitter, which is degraded due to lattice vibrations. By integrating quantum defects in diamond with ultra-small mode volume plasmonic cavities, we can amplify the optical emission to the point where it becomes coherent again, i.e. the emission rate is faster than the phonon scattering rate. We will explore such integration as a pathway to room-temperature quantum communication between qubits in diamond.