We demonstrate the generation of pulsed temporal-mode encoding quantum states via spontaneous four-wave mixing using two micro-ring resonators on the silicon-on-insulator (SOI) platform. The output is tunable between separable states and two-dimensional entangled states.
Here we show photon pair generation from ring resonator and waveguide structures in a hybrid silicon-BTO on insulator platform with a pulsed pump. Our analysis of single photon and coincidence generation rates show that Spontaneous Four-Wave Mixing is comparable to that expected from SOI devices of similar characteristics and find a γeff of (14.7 ± 1.3) and (2.0 ± 0.3) MHz/mW2 for ring resonator and waveguide structures respectively.
Photonic integrated circuits (PICs) based on silicon-on-insulator (SOI) substrates provide a lightweight, compact platform for applications in quantum optics. We show the evaluation and characterization of an SOI-bascd PIC design for an entangled photon pair source, generating photon pairs by means of the nonlinear process of spontaneous four-wave mixing in microring resonators. Experimental results following from the chip fabrication fed back into the simulated parameter tuning effects, culminating in photon pair generation with measured correlations exceeding classically predicted limits.
We present a general quantum-mechanical formalism to describe photon-pair generation via four-wave mixing in a
Silicon-on-Insulator (SOI) microresonator. We also provide design principles for efficient photon-pair generation
in an SOI microresonator through numerical simulations. Ring-cavity designs are shown to have a much wider
dispersion-compensate frequency range than straight-cavity designs. Such on-chip quantum devices are highly
promising for future integrated quantum information processing.