title: Investigation of electric/magnetic local interaction between Si photonic-crystal nanocavities and Au meta-atoms.
abstract: We experimentally investigate nanoscale local interaction in a composite system consisting of dielectric photonic-crystal nanocavity and metallic meta-atoms. The Q factor of the composite system changes by a maximum of about 10 dB based on the relative position and the type of meta-atoms. The emission by meta-atoms dominates the nanocavity emission when they are in the electric or magnetic antinodes of the cavity field. Circularly polarized emission is achieved by tuning the polarization, the position, and the coupling phase of each meta-atom with respect to the nanocavity. Utilization of the local interaction with meta-atoms is shown to be useful as a new degree of freedom in tailoring the characteristics of nanocavities.
authors.forename: Yoonsik
authors.initials: Y
authors.lastname: Yi
authors.forename: Takashi
authors.initials: T
authors.lastname: Asano
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Tanaka
authors.forename: Bong-Shik
authors.initials: BS
authors.lastname: Song
authors.forename: Susumu
authors.initials: S
authors.lastname: Noda