Dispersion compensation using single-material fibers

The properties of photonic crystal fibers with large air holes can be modeled by a silica rod in air. Such approximate calculations show that the dispersion of photonic crystal fibers could exceed -2000 ps/mm/km, or they could compensate (to within ±0.2%) the dispersion of 35 times their length of standard fiber over a 100-nm range     

Homodyne reconstruction of density matrix in fock-state basis: Deterministic versus maximum likelihood approach

Abstract

Quantum state reconstruction, consisting of mixing an unknown signal with the sequence of probe fields on the beam-splitter and the subsequent counting of the statistics of the output state, is considered here. Besides the standard method based on deterministic inversion of counted data the maximum likelihood estimation is applied. The comparison demonstrates the possible failure of the standard reconstruction procedure in some cases.     

Localized function method for modeling defect modes in 2-D photoniccrystals

We present a novel, general, and numerically efficient treatment of electromagnetic modes localized at defects in two-dimensional (2-D) photonic crystals. The method represents the fields in terms of orthogonal functions localized at the defect and is a fully vector treatment