title: Photo-oxidative tuning of individual and coupled GaAs photonic crystal cavities.
abstract: We demonstrate a photo-induced oxidation technique for tuning GaAs photonic crystal cavities using a low-power 390 nm pulsed laser. The laser oxidizes a small (< 1 μm) diameter spot, reducing the local index of refraction and blueshifting the cavity. The tuning progress can be actively monitored in real time. We also demonstrate tuning an individual cavity within a pair of proximity-coupled cavities, showing that this method can be used to tune individual cavities in a cavity network, with applications in quantum simulations and quantum computing.
authors: Alexander Y
authors: AY
authors: Piggott
authors: Konstantinos G
authors: KG
authors: Lagoudakis
authors: Tomas
authors: T
authors: Sarmiento
authors: Michal
authors: M
authors: Bajcsy
authors: Gary
authors: G
authors: Shambat
authors: Jelena
authors: J
authors: Vučković