Output details
13 - Electrical and Electronic Engineering, Metallurgy and Materials
University of Southampton
On-chip, photon-number-resolving, telecommunication-band detectors for scalable photonic information processing
Significance of output:
Number-resolving photon counting on-chip allows operation at higher mean photon number and without fidelity loss from off-chip coupling. Operating at 1550nm is crucial for long distance quantum information distribution. This work with Oxford (Walmsley’s group) and NIST (Boulder, US - Nam’s group) required us to develop waveguide chips that could operate at liquid helium temperature (60mK) to enable superconductor operation, probably the lowest temperature ever for an optical waveguide, and bringing significant challenges in device structure and fibre connectorisation. Southampton fabricated the entire optical device. References to the work include Nature Physics (Aspuru et al. Nat Phot.8, 285-291, (2012)).
