Spontaneous Emission Control in Micropillar Cavities Containing a Fluorescent Molecular Dye


  • The authors thank the UK EPSRC for support of this work via grants S58331, S05687, and S09838, and the European Union via 5th Framework project “HYTEC” (HPRN-CT-2002-00315).


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The fabrication of micropillar microcavities containing a fluorescent organic dye is reported. Scanning near-field optical microscopy of the luminescence from such structures (see figure and cover) confirms that a significant increase in radiative rate occurs as a result of the reduced optical-mode volume. Such structures may eventually permit efficient single-photon light sources operating at room temperature to be developed for quantum-cryptography and quantum-computing applications.