Phase-controlled integrated photonic quantum circuits.
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.
Smith
Brian J
BJ
Centre for Quantum Technologies, National University of Singapore, Singapore. b.smith1@physics.ox.ac.uk
Kundys
Dmytro
D
Thomas-Peter
Nicholas
N
Smith
P G R
PG
Walmsley
I A
IA
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