A resonator antenna made from a complex artificial surface and metallic ground plane is described. The realized using woodpile electromagnetic bandgap (EBG) material, which shown to have frequency dependent reflection location. highly directive radiation pattern created due the angle-dependent attenuation of coupling free space. has advantages low height, loss, sidelobes. It that directivity can be varied over fixed range by changing aperture size device, with maximum determined both feed...

We study collective spontaneous emission from a linear array of N two-state atoms using quantum trajectory theory and without an priori single-mode assumption. Assuming fully excited initial state, we calculate the angular distribution $k\mathrm{th}$ emitted photon, $k=1,\dots{},N.$ investigate evolution dipole radiation pattern for first photon to characteristic directional superradiance. The formalism is developed around unravelling master equation in terms source-mode jumps. Exact...

We study collective spontaneous emission from arbitrary distributions of N two-state atoms using quantum trajectory theory and without an a priori single-mode assumption. Assuming fully excited initial state, we calculate the angular distribution average intensity, focusing on pencil- disc-shaped samples. The formalism is developed around unravelling master equation in terms source mode jumps. A modified boson approximation made to treat many-atom case, where it found that strong directional...

We investigate time-dependent spectra of the intermittent resonance fluorescence a single, laser-driven, three-level atom due to electron shelving. After quasistationary state strong transition, slow decay shelving leads steady system. The long-term stationary spectrum consists coherent peak, an incoherent Mollow-like structure, and very narrow peak at laser frequency. find that in ensemble-average dynamics, emerges during regime, after Mollow has stabilized but well before average dark time...

Abstract We present a numerical analysis of the performance three‐dimensional (3D) perfectly matched layer (PML) absorbing boundary conditions (ABCs) in photonic crystal (PC) waveguide. This formulation dramatically reduces reflections from ends PC waveguide, leading to highly accurate transmittance and reflectance calculations for waveguide components. The 3D PC‐based PML ABC is demonstrated give good results when used analyze 90° bend © 2004 Wiley Periodicals, Inc. Microwave Opt Technol...

article Free Access Share on Characterizing case constraints Authors: Louise Scott Fraunhofer Institute, Kaiserslautern, Germany GermanyView Profile , Levente Horvath Macquarie University, Sydney, Australia AustraliaView Donald Day InContext Enterprises, Harvard, Massachusetts MassachusettsView Authors Info & Claims Communications of the ACMVolume 43Issue 11esNov. 2000 pp 14–eshttps://doi.org/10.1145/352515.352533Published:01 November 2000Publication History 4citation522DownloadsMetricsTotal...

Quantum trajectory simulations of a cavity QED system comprising an atomic beam traversing standing-wave are carried out. The delayed photon coincident rate for forward scattering is computed and compared with the measurements Rempe et al. [Phys. Rev. Lett. 67, 1727 (1991)] Foster A 61, 053821 (2000)]. It shown that moderate misalignment can account degradation predicted correlation. Fits to experimental data made in weak-field limit single adjustable parameter---the tilt from perpendicular...

In this paper we show that the scattered field of a bichromatically driven V-type three-level atom exhibit asymmetry and large violation classical bounds in amplitude-intensity correlations. These features result from noncommutativity amplitude intensity operators, strong non-Gaussian fluctuations system. The correlations resonance fluorescence, with its third-order fluctuations, describe nonclassical emitted more accurately than second-order measure related to squeezing. Spectra variances...

We introduce the concept of initial-phase spectroscopy as a control dynamics entangled states encoded into two-atom system interacting with broadband squeezed vacuum field. illustrate our considerations by examining transient spectrum field emitted two systems, small sample (Dicke) and spatially extended (non-Dicke) models. It is found that shape spectral components depends crucially on relative phase between initial state follow temporal evolution show depending hole burning can occur in...

We extend the analysis of photon coincidence spectroscopy beyond bichromatic excitation and two-photon detection to include multichromatic multiphoton detection. Trichromatic three-photon are studied in detail, we identify an observable signature a triple resonance atom-cavity system.

We show that shifts in locations of two-photon coincidence spectral peaks, for a bichromatically driven two-level atom passing through single-mode cavity, are due to competition between excitation pathways Jaynes-Cummings system. also discuss an analogous shift (single-photon) peaks three-level V system, which demonstrates is important this simple

We show that photon coincidence spectroscopy can provide an unambiguous signature of two atoms simultaneously interacting with a quantized cavity field mode. also the single-atom Jaynes—Cummings model be probed effectively via spectroscopy, even deleterious contributions to signal from two-atom events. In addition, we have explicitly solved eigenvectors and eigenvalues two-level coupled mode for differing coupling strengths.

Using master equation and quantum Monte Carlo wavefunction approaches, we study the circumstances surrounding emergence degradation of elusive squeezing fluctuations in two-level atom resonance fluorescence. For its measurement suggest conditional homodyne detection (CHD) [G.T. Foster, L.A. Orozco, H.M. Castro-Beltran, H.J. Carmichael, Phys. Rev. Lett. 85, pp. 3149-3152, 2000], which is nearly independent detector efficiencies, have harmed previous attemps. Squeezing fluorescence requires a...

The resonant heating of a harmonically trapped ion by standing-wave light field is described as quantum stochastic process combining coherent Schrödinger evolution with Bohr-Einstein jumps. Quantum and semi-quantum treatments are compared.

The resonant heating of a harmonically trapped ion by standing-wave light field is described as quantum stochastic process combining coherent Schrödinger evolution with Bohr-Einstein jumps. dependence the center-of-mass motion on Lamb-Dicke parameter studied. For parameters greater than unity we demonstrate significant departures from diffusion that holds in limit small momentum "kicks"; strong inhibition (fluorescence) occurs. Heating rates are calculated Monte-Carlo average both full and...

The resonant heating of a harmonically trapped ion by standing-wave light field is described as quantum stochastic process combining coherent Schroedinger evolution with Bohr-Einstein jumps. Quantum and semi-quantum treatments are compared.

<i>Ab initio</i> quantum trajectory simulations of a cavity QED system comprising an atomic beam traversing coherently driven standing-wave are carried out. The intensity correlation function in transmission is computed and compared with the experimental measurements Rempe <i>et al</i>. [Phys. Rev. Lett. <b>67</b>, 1727 (1991)] Foster A <b>61</b>, 053821 (2000)]. It shown that density fluctuations induced by motion atoms can account for reported disagreement results theory (by overall scale...

Photon coincidence spectroscopy is a promising technique for probing the nonlinear regime of cavity quantum electrodynamics in optical domain, however its accuracy mitigated by two factors: higher-order photon correlations, which contribute to an enhanced pair count rate, and non-simultaneity emitted pairs from cavity. We show that effective presence these effects if quantitative predictions are adjusted include correlations.