Wide-span and tunable-wavelength photon pairs around 1.55 \mu m from a silicon nanophotonic chip

TL;DR

This paper demonstrates a compact silicon nanophotonic chip capable of generating tunable photon pairs around 1.55 μm, enabling wavelength division multiplexing in telecommunications.

Contribution

It introduces a silicon nanophotonic chip with coupled microrings for tunable, wide-span photon pair generation at telecom wavelengths, advancing integrated quantum photonics.

Findings

Photon pairs generated in multiple wavelengths around 1.55 μm

Wavelengths are tunable over several nanometers

Enables wavelength division multiplexing at telecom bands

Abstract

Using a compact optically-pumped silicon nanophotonic chip consisting of coupled silicon microrings, we generate photon pairs in multiple pairs of wavelengths around 1.55 \mu m. The wavelengths are tunable over several nanometers, demonstrating the capability to generate wavelength division multiplexed photon pairs at freely-chosen telecommunications-band wavelengths.