Research project

SIQUST Single-photon sources as new quantum standards (DFM.AD002.075)

Thematic area

Physical sciences and technologies of matter

Project area

Scienze e tecnologie quantistiche (DFM.AD002)

Structure responsible for the research project

National Institute of Optics (INO)

Project manager

Phone number: 05523081


The aim of this proposal is to develop new absolute standard radiation sources, which exploit the discrete and quantum nature of photons, and the necessary metrological infrastructure. These sources are based on single-photon emitters with calculable photon emission rate and high purity, i.e. very low multiple photon emission probability. Such sources hold promise as new quantum standards with large numbers of applications, e.g. calibration of single-photon detectors, realization of the SI base unit candela, quantum random-number generation, quantum key distribution, sub-shot noise metrology, quantum-enhanced metrology, and photon-based quantum computation.

Start date of activity



Single-photon, sources, new quantum standards

Last update: 06/06/2023