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Enhanced spontaneous emission rate from single InAs quantum dots in a photonic crystal nanocavity at telecom wavelengths

2007; American Institute of Physics; Volume: 91; Issue: 12 Linguagem: Inglês

10.1063/1.2789291

1520-8842

L. Balet, Marco Francardi, Annamaria Gerardino, Nicolas Chauvin, Blandine Alloing, C. Zinoni, Christelle Monat, Lianhe Li, Nicolas Le Thomas, R. Houdré, Andrea Fiore,

Semiconductor Quantum Structures and Devices

The authors demonstrate coupling at 1.3μm between single InAs quantum dots (QDs) and a mode of a two dimensional photonic crystal (PhC) defect cavity with a quality factor of 15 000. By spectrally tuning the cavity mode, they induce coupling with excitonic lines. They perform a time integrated and time-resolved photoluminescence and measure an eightfold increase in the spontaneous emission rate inducing a coupling efficiency of 96%. These measurements indicate the potential of single QDs in PhC cavities as efficient single-photon emitters for fiber-based quantum information processing applications.