title: Phase-controlled integrated photonic quantum circuits.
abstract: Scalable photonic quantum technologies are based on multiple nested interferometers. To realize this architecture, integrated optical structures are needed to ensure stable, controllable, and repeatable operation. Here we show a key proof-of-principle demonstration of an externallycontrolled photonic quantum circuit based upon UV-written waveguide technology. In particular, we present non-classical interference of photon pairs in a Mach-Zehnder interferometer constructed with X couplers in an integrated optical circuit with a thermo-optic phase shifter in one of the interferometer arms.
authors: Centre for Quantum Technologies, National University of Singapore, Singapore. b.smith1@physics.ox.ac.uk
authors: Brian J
authors: BJ
authors: Smith
authors: Dmytro
authors: D
authors: Kundys
authors: Nicholas
authors: N
authors: Thomas-Peter
authors: P G R
authors: PG
authors: Smith
authors: I A
authors: IA
authors: Walmsley
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D008027:Light; D008962:Models, Theoretical; D055096:Optical Devices; D017785:Photons; D010865:Pilot Projects; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D018511:Systems Integration