  The Second Quantum Revolution facilitates the engineering of new classes of
sensors, communication technologies, and computers with unprecedented
capabilities. Supply chains for quantum technologies are emerging, some
focussed on commercially available components for enabling technologies and/or
quantum-technologies research infrastructures, others with already higher
technology-readiness levels, near to the market.
  In 2018, the European Commission has launched its large-scale and long-term
Quantum Flagship research initiative to support and foster the creation and
development of a competitive European quantum technologies industry, as well as
the consolidation and expansion of leadership and excellence in European
quantum technology research. One of the measures to achieve an accelerated
development and uptake has been identified by the Quantum Flagship in its
Strategic Research Agenda: the promotion of coordinated, dedicated
standardisation and certification efforts. Standardisation is indeed of
paramount importance to facilitate the growth of new technologies, and the
development of efficient and effective supply chains. The harmonisation of
technologies, methodologies, and interfaces enables interoperable products,
innovation, and competition, all leading to structuring and hence growth of
markets. As quantum technologies are maturing, time has come to start thinking
about further standardisation needs.
  This article presents insights on standardisation for quantum technologies
from the perspective of the CEN-CENELEC Focus Group on Quantum Technologies
(FGQT), which was established in June 2020 to coordinate and support the
development of standards relevant for European industry and research.
