The Quantum Metrology Institute brings together all of NPL's
leading-edge quantum science and metrology research and provides the expertise
and facilities needed for academia and industry to test, validate, and
ultimately commercialise new quantum research and technologies.
The NPL Time & Frequency group has long-standing
experience in the development of ultra-stable lasers and high-accuracy cold
atom and ion microwave and optical clocks. Our laboratory based cold atom and
ion optical clocks have demonstrated accuracies in the region of a few parts in
1017 to few in 1018. As part of a programme to develop
compact optical clocks, NPL has designed a novel cubic cavity that has a very
low sensitivity to vibration (<2 x 10-11/g). This patented design
is being developed for future space applications in areas such as future
generation GNSS, telecommunications, relativistic geodesy, earth observation
(gravity mapping) and fundamental physics. Further, we have developed infra-red
frequency references for space-borne climate change studies.