Cavity-resonant excitation for efficient single photon generation

Details Cavity-resonant excitation for efficient single photon generation Cavity-resonant excitation for efficient single photon generation

2008-03-17

arxiv.org/abs/0803.2403v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We present an efficiently pumped single photon source based on single quantum dots (QD) embedded in photonic crystal nanocavities. Resonant excitation of a QD via a higher order cavity mode results in a 100$\times$ reduced optical power at the saturation onset of the photoluminescence, compared with excitation at the same frequency, after the cavity mode is detuned. Furthermore, we demonstrate that this excitation scheme leads to selective excitation of QDs coupled to the cavity by comparing photoluminescence and auto-correlation spectra for the same excitation wavelength with and without the cavity mode. This provides much cleaner conditions for single photon generation.

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