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We theoretically present that generation of entangled-photon pairs from biexcitons in a quantum well is dramatically enhanced by using a microcavity. Itpsilas optimal condition is qualitatively understood from the characteristic feature of the cavity QED.
We report on strong coupling between a discrete optical mode of a high-Q micropillar cavity and single excitons of self assembled In0.43Ga0.57As quantum dots and compare the results with previous studies on In0.3Ga0.7As quantum dots.
Benefits of elliptical micropillars are reported including polarisation control of dot emission; and increased quality factors as one of the loss mechanisms found in circular micropillars is removed.
Sum frequency data are reported from the nonlinear interaction of two coherently excited resonant modes of a two-dimensional planar photonic crystal microcavity patterned in a free-standing InP slab.
The phenomenon of cooperative spontaneous emission (Dickepsilas superradiance) is investigated numerically for ensembles of strongly-confined quantum dots coupled to low-Q optical cavities. Clear signatures of superradiance are predicted for emission dynamics and photon statistics.
The evolution of individual microsphere-resonator modes into coherently coupled photon states is studied using polarization-sensitive imaging spectroscopy. Photon localization is found both due to Bloch-mode formation and size disorder in agreement with a coupled-oscillator model.
We modulate cavity-polaritons using surface acoustic waves. The corresponding formation of a mini-Brillouin zone and band folding of the polariton dispersion is demonstrated for the first time. Results are in good agreement with model calculations.
We derive analytical formulas for the quantum efficiency and emission spectra of single-photon sources in the cavity-QED strong-coupling regime. We investigate the effects of pure dephasing, treated in the phase-diffusion model, on these results.
We present a microscopic theory of polariton photoluminescence in J-aggregate microcavities including the effects of phonons and disorder. We demonstrate a phonon-assisted coupling of the upper and lower polariton modes and compare to experiment.
We demonstrate an efficient source of nearly indistinguishable single photons from an InAs quantum dot coupled to a photonic crystal microcavity. This QD-cavity coupled system has applications in quantum information science.
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