Figure 2

Photonic crystal cavity QD single-photon source.
(a) Scanning electron microscope image showing a typical L3 defect photonic crystal cavity. (b) High power PL spectrum of the L3 cavity. (c) PL spectra recorded at low excitation power, showing emission of QDs coupled to the photonic crystal cavity mode, M3. The grey shaded area represents the spectral location and linewidth of the cavity mode. (d) Time resolved PL measurements recorded as a function of emission energy for the QD-photonic crystal cavity. (e) Lifetimes extracted from time-resolved PL measurements shown in (d) as a function of emission energy.