Coupling of PbS Quantum Dots to Photonic Crystal Cavities at Room Temperature

Details Coupling of PbS Quantum Dots to Photonic Crystal Cavities at Room Temperature Coupling of PbS Quantum Dots to Photonic Crystal Cavities at Room Temperature

2005-05-14

arxiv.org/abs/physics/0505098v1

Physics

Optics

9 pages, 3 figures

Scientific paper

10.1117/12.645341

We demonstrate the coupling of PbS quantum dot emission to photonic crystal cavities at room temperature. The cavities are defined in 33% Al, AlGaAs membranes on top of oxidized AlAs. Quantum dots were dissolved in Poly-methyl-methacrylate (PMMA) and spun on top of the cavities. Quantum dot emission is shown to map out the structure resonances, and may prove to be viable sources for room temperature cavity coupled single photon generation for quantum information processing applications. These results also indicate that such commercially available quantum dots can be used for passive structure characterization. The deposition technique is versatile and allows layers with different dot densities and emission wavelengths to be re-deposited on the same chip.

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