title: Evidence of a mobility edge for photons in two dimensions.
abstract: A scaling analysis of conductance for photons in two dimensions is carried out and, contrary to widely held belief, we find strong evidence of a mobility edge. Such behavior is compatible with the existence of an Anderson transition for electronic systems under symplectic symmetry, and indeed we show that the transfer matrix in the photonic system we have modelled has such a symmetry. We verify single parameter scaling of the conductance and demonstrate the transition from the metallic phase to localization. Key parameters, including the critical disorder, the conductance, and the critical exponent of the localization length are calculated, and it is shown that the value of the critical exponent is similar to that for electronic systems with symplectic symmetry.
authors.affiliation: Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS) and Department of Mathematical Sciences, University of Technology, Sydney NSW 2007, Australia.
authors.forename: A A
authors.initials: AA
authors.lastname: Asatryan
authors.forename: L C
authors.initials: LC
authors.lastname: Botten
authors.forename: M A
authors.initials: MA
authors.lastname: Byrne
authors.forename: R C
authors.initials: RC
authors.lastname: McPhedran
authors.forename: C M
authors.initials: CM
authors.lastname: de Sterke