title: Quasinormal mode theory and design of on-chip single photon emitters in photonic crystal coupled-cavity waveguides.
abstract: Using a quasinormal mode (QNM) theory for open cavity systems, we present detailed calculations and designs of a photonic crystal nanocavity (PCN) side-coupled to a photonic crystal waveguide (PCW) for on-chip single photon source applications. We investigate various cavity-waveguide geometries using an L3 PCN coupled to a W1 PCW, obtaining the quality factors, effective mode volumes, and single photon Purcell factors of the complete loaded cavity-waveguide system as a function of spatial separation between the two. We also show that the quality factor does not monotonically increase with increasing separation between the PCN and PCW, and we identify a particular hole/defect which acts as the key structural parameter in the cavity-waveguide coupling.
authors.forename: T
authors.initials: T
authors.lastname: Malhotra
authors.forename: R-C
authors.initials: RC
authors.lastname: Ge
authors.forename: M
authors.initials: M
authors.lastname: Kamandar Dezfouli
authors.forename: A
authors.initials: A
authors.lastname: Badolato
authors.forename: N
authors.initials: N
authors.lastname: Vamivakas
authors.forename: S
authors.initials: S
authors.lastname: Hughes