NCCR Precision

Home institutions: ETH Zurich, University of Zurich

Precision measurements are a cornerstone of exact sciences. They play a key role in research, innovation and technological development, both in academia and industry. Since the fundamental redefinition of the International System of Units (SI) in 2019 and the introduction of new technologies such as optical frequency standards and frequency combs, measurement science is undergoing a true revolution, creating new opportunities in fields such as physics, cosmology, navigation, geology and sensing.

The National Centre of Competence in Research "Precision – Uncovering new physics through precision measurement" will run a comprehensive research programme on precision measurements, focusing on the physical quantities of time and frequency. Its goal is to raise the accuracy and sensitivity of measurements to unprecedented levels and, in doing so, to explore previously unknown physical phenomena beyond the Standard Model of particle physics. Its key structural measure is to establish and distribute optical frequency standards throughout Switzerland.

NCCR Precision is built on four pillars:

• Fundamental physics: Precision measurements on simple atoms and molecules – including antimatter – to test physical theories and discover new phenomena.

• Quantum state control: Targeted manipulation of particle systems to make measurements even more sensitive and precise.

• Photonics technologies: Development of new optical components such as ultranarrow linewidth lasers and frequency combs to enhance precision and broaden the applicability of measurement systems.

• Precision sensing: Use of atomic and solid-state systems as high-resolution sensors, for example to detect minute electric and magnetic fields or for navigation and gravimetry (measurement of mass).

Thirty-two research groups from various institutions combine internationally recognised expertise in spectroscopy, atomic and molecular physics, optics and sensing.

Switzerland is already excellently positioned internationally in the field of precision measurement. To maintain and strengthen this position, long-term interdisciplinary research is essential. NCCR Precision provides the foundation to deepen our understanding of the laws of nature while generating new momentum for Switzerland’s high-tech economy.