Manipulation of the Spontaneous Emission Dynamics of Quantum Dots in 2D Photonic Crystals

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dc.creatorKress, A.
dc.creatorHofbauer, F.
dc.creatorReinelt, N.
dc.creatorKrenner, H. J.
dc.creatorMeyer, R.
dc.creatorBoehm, G.
dc.creatorFinley, J. J.
dc.date2005-01-04
dc.date2005-04-08
dc.date.accessioned2026-07-07T06:11:54Z
dc.date.available2026-07-07T06:11:54Z
dc.descriptionWe demonstrate the ability to control the spontaneous emission dynamics of self-assembled quantum dots via the local density of optical modes in 2D-photonic crystals. We show that an incomplete 2D photonic bandgap is sufficient to significantly lengthen the spontaneous emission lifetime ($>2\times$) over a wide bandwidth ($Δλ\geq40$ nm). For dots that are both \textit{spectrally} and \textit{spatially} coupled to strongly localized ($V_{mode}\sim1.5(λ/n)^{3}$), high $Q\sim2700$ optical modes, we have directly measured a strong Purcell enhanced shortening of the emission lifetime $\geq5.6\times$, limited only by our temporal resolution. Analysis of the spectral dependence of the recombination dynamics shows a maximum lifetime shortening of $19\pm4$. From the directly measured enhancement and suppression we show that the single mode coupling efficiency for quantum dots in such structures is at least $β=92%$ and is estimated to be as large as $\sim97%$.
dc.description11 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0501013
dc.identifierhttp://arxiv.org/abs/quant-ph/0501013
dc.identifierPhys. Rev. B 71, 241304(R) (2005)
dc.identifierdoi:10.1103/PhysRevB.71.241304
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/92626
dc.subjectQuantum Physics
dc.subjectMesoscale and Nanoscale Physics
dc.titleManipulation of the Spontaneous Emission Dynamics of Quantum Dots in 2D Photonic Crystals
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