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(a) Schematic of the experimental setup for the generation and manipulation of triggered single photons from a QD. Definition of acronyms: optical attenuator, taper waveguide, modulator, bandpass filter, photon counting avalanche photodiode, filter, . (b) PL spectrum of the emission of the single QD used in this work. The spectrum was taken for an integration time of 60 s under an excitation power of 10 nW.
(a) Schematic of the timing sequence of the experiment. corresponds to the repetition period of the excitation laser, is the spontaneous emission lifetime, is the width of the electro-optic modulation, is the delay of the modulation with respect to the incoming photon, and is the width of the detection window. (b) Unmodulated and modulated single photon waveforms for different modulation delays. The temporal profile of the modulation is shown in the inset and corresponds to a full-width half-maximum of . (c) Same traces shown in (b) but separated for clarity. The modulation delays are , respectively. The unmodulated single photon waveform is shown for comparison in blue. All traces are integrated for 1200 s.
(a) Single photon modulated waveform for a modulation width, , of along with the unmodulated waveform for comparison. The temporal profile of the modulation is shown in the inset. (b) Single photon modulated waveforms for the inverted Gaussian modulation profile shown in the inset of (i) for modulation delays of , respectively. The unmodulated waveform is shown for comparison.
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