Continuously coupled parametric generators and their quantum statistics

Abstract

In this paper the quantum-statistical properties of light beams propagating in a directional nonlinear coupler are investigated. This device is composed of a pair of linearly coupled nonlinear waveguides operating by means of degenerate parametric downconversion. The possibility of generation of nonclassical states of light in single and compound modes, using the short-length approximation, is discussed. Influence of linear and nonlinear mismatches for generation of nonclassical light is taken into account. : 42.50.Dv, 42.79.Gn PACS

Negative ion source for chlorine isotope ratio measurements

“…The evidence of DEA reaction channels in chloromethane at very low electron energies has encouraged us to test the surface ionization process in the formation of Cl À from CH 3 Cl, and to apply this technique in chlorine isotope ratio measurements. Previous work by Hereć et al 16 on the use of a negative surface ionization source for secondary ion mass spectrometry (SIMS) studies has also encouraged us to perform our own experiments. These authors obtained a high intensity Cl À ion beam from a halocarbon gas directed onto a hot tungsten filament.…”

Influence of pump-field scattering on nonclassical-light generation in a photonic-band-gap nonlinear planar waveguide

“…Coefficients B j , C j , D jk , andD jk can then be determined using matrix U introduced in Eq. (15) and incident values of B j,in,A and C j,in,A related to anti-normal ordering of field operators (for details, see [8]):…”

“…It is interesting to note, that the analyzed waveguide behaves qualitatively similarly as a waveguide with two separated parts with optical parametric processes and with fields in different parts interacting linearly through evanescent waves. This waveguide with co-propagating fields has been analyzed in [15,16].…”