News

Mise en pratique includes contributions from photometry and radiometry projects

PQED
Image of a predictable quantum efficient detector (PQED)

EURAMET’s research programmes contribute towards Mise en pratique for the definition of the candela and associated derived units

Last year the Consultative Committee for Photometry and Radiometry (CCPR) of the BIPM published the new revision of the mise en pratique of the candela. This document includes information on the practical realization of units for photometric and radiometric quantities using photon-number-based techniques.  

In the section considering detector-based radiometric traceability, a new method based on the predictable quantum efficient detector (PQED) is described. The PQED was developed in iMERA-Plus project Candela: towards quantum-based photon standards (T1.J2.3 qu-candela) and can be used as a primary standard of optical power. In addition, outputs from EMRP project Single-photon sources for quantum technologies (EXL02 SIQUTE) are also featured.

The inclusion of project outputs in the mise en pratique emphasises the important role of the new method for optical power measurements, with EURAMET taking the lead in the field and coordinating the work outside Europe. 

The document can be downloaded from the BIPM website.

Select your area of interest
Workshops on Europe’s digital measurement evolution held in September 2021
2021-10-08

EURAMET and partners held a successful series of events on ‘digital transformation challenges’ in September more

Dynamic pressure calibrator from EMPIR project enables traceable calibrations
2021-09-08

Calibrator based on technology developed in this project has been sold to a major European calibration service provider more

63 EMPIR projects to present at International Metrology Congress, CIM 2021
2021-09-06

7 – 9 September 2021, Lyon France and also online more

EMPIR paper wins Measurement Science and Technology Outstanding Paper Award
2021-09-02

Publication from EMPIR nanometrology project wins award in the field of precision measurement more

Call for Mentoring Scheme Award applications
2021-08-26

Applications invited for award enabling two metrological institutions to work together more

Page 1 of 174.