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A membrane photonic crystal cavity coupled to a waveguide is fabricated and characterised. Fabry-Perot method was used to measure propagation losses. We show that coupling results in asymmetric features in the transmission suitable for high-speed analog modulation.
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.
Optical characterization of a novel type of semiconductor microcavity based on a fully-buried, all-epitaxial design reveals many properties essential for a manufacturable technology. We demonstrate detailed mode-imaging, lasing, as well as a sizeable Purcell effect.
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.
We observed highly non-thermal features from the photoluminescence of InGaAs/GaAs quantum dots in a planar microcavity. The effect was interpreted in terms of the interplay of phonon relaxation and cavity-dependent excitonic radiative recombination.
Rotating crystals that contain a circular path of slow-light structure (e.g. CROW) are studied using tight-binding theory. Novel manifestations of the Sagnac effect in non-degenerate and degenerate modes are explored. Miniature optical gyroscopes are discussed.
We report the first realization of a monolithic vertical-cavity, surface emitting micro optical parametric conversion nanostructure, triply resonant with the parametric frequencies, allowing parametric oscillation or amplification with a very low pump power threshold.
We present small modal area Surface Plasmon waveguides, with low group velocities over unusually large bandwidths. Also, we show how Electro-magnetically Induced Transparency materials, inserted into microcavities, enable optical non-linearities at single photon power levels.
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.
Mapping the spatial and spectral resonant modes of wavelength-scale planar-hemispherical microcavities demonstrates that they have Laguerre-Gauss symmetry. However the spectral ordering of transverse modes confounds expectations from the paraxial approximation.
Optical microcavity was fabricated in an AlGaAs-based photonic crystal slab. The optical resonance was within the communication wavelengths and had a quality factor of 1900. Optical bistability due to thermo-optic origin was observed.
We experimentally demonstrate the potential for using micro-cavities coupled to a photonic crystal waveguide as an optically tunable wavelength filter or modulator. This scheme is capable of giga-hertz speeds and low operating power.
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 use the finite difference time domain method (FDTD) to investigate polarisation control of single-photon emission from single quantum dots confined in elliptical micro-pillar microcavities. In contrast to circular pillars, one of the cavity modes has smaller modal volume and maintains high Q-factor.
We demonstrate crystalline resonators with optical Q factor of (5.3plusmn0.1)times1010. We also demonstrate cavities smaller than 100 microns in diameter. High Q and small volume allow these resonators to be used in quantum optics experiments.
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.
We review the history of semiconductor microlasers, and provide a selective survey of emerging topics in this field covering VCSELs, VECSELs in optically and electrically-pumped formats, and a range of microcavity devices.
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