Quantum technology is poised to enable a step change in human capability for computing,
communications and sensing. Photons are indispensable as carriers of quantum information …

Optical isolators, while commonplace in bulk and fiber optical systems, remain a key missing
component in integrated photonics. Isolation using magneto-optic materials has been …

Microring resonators are attractive for low-power frequency conversion via Bragg-scattering
four-wave-mixing due to their comb-like resonance spectrum, which allows resonant …

We fabricate silicon waveguide spirals and a ring resonator to generate photon pairs based
on a spontaneous four-wave mixing. The coincidence-to-accidental-ratio (CAR) of photon …

We report on the design and the demonstration of silicon photonic ultraflat bandpass filters
with low insertion loss and high out-of-band rejection for an operation near the 1550 nm …

Quantum information processing has conceptually changed the way we process and
transmit information. Our understanding of quantum physics, which explains the seemingly …

This article reports a novel design of a compact tunable resonance filter with a highly
extinguished and ultra-broad out-of-band rejection for on-chip amplified spontaneous noise …

High coincidence-to-accidental ratio (CAR) is crucial for photon-pair sources (PPSs)
integrated with pump reject filters (PRFs) in silicon, but CAR values currently reported for …

Integrated photonics provides scalability needed for useful photonic quantum information
processing. Many optical resonators must be aligned to the same pump wavelength to …

We demonstrate the generation of degenerate photon pairs from spontaneous parametric
down-conversion in titanium-indiffused waveguides in lithium niobate at cryogenic …