title: Nanowire coupling to photonic crystal nanocavities for single photon sources.
abstract: We demonstrate highly efficient evanescent coupling via a silica loop-nanowire, to ultra-small (0.5 (lambda/n)(3) ), InAs/InP quantum dot photonic crystal cavities, specifically designed for single photon source applications. This coupling technique enables the tuning of both the Q-factor and the wavelength of the cavity mode independently, which is highly relevant for single photon source applications. First, this allows for the optimization of the extraction efficiency while maintaining a high Purcell factor. Second, the cavity mode can be matched with a spectrally misaligned quantum dot without changing the structure or degrading the Q-factor: a 3 nm resonance shift is reported.
authors.forename: Christian
authors.initials: C
authors.lastname: Grillet
authors.forename: Christelle
authors.initials: C
authors.lastname: Monat
authors.forename: Cameron L
authors.initials: CL
authors.lastname: Smith
authors.forename: Benjamin J
authors.initials: BJ
authors.lastname: Eggleton
authors.forename: David J
authors.initials: DJ
authors.lastname: Moss
authors.forename: Simon
authors.initials: S
authors.lastname: Frédérick
authors.forename: Dan
authors.initials: D
authors.lastname: Dalacu
authors.forename: Philip J
authors.initials: PJ
authors.lastname: Poole
authors.forename: Jean
authors.initials: J
authors.lastname: Lapointe
authors.forename: Geof
authors.initials: G
authors.lastname: Aers
authors.forename: Robin L
authors.initials: RL
authors.lastname: Williams