Welcome to COMB.AT – a Special Research Area funded by the FWF, DFG and co-financed by the participating research institutions that aims to improve precision measurements of physical constants in optical metrology! COMB.AT is short for “Coherent Optical Metrology Beyond Electric-Dipole-Allowed Transitions”.

We bring scientists from four different academic institutions together to establish a systematic theoretical and experimental approach to study the advantages and limitations of the interaction of light that carries topological charges with matter. In particular, we aim to look at transitions in carbon-monosulfide (CS) molecules and the 229Th nucleus. These formally dipole-forbidden transitions have not yet been excited by lasers and are therefore an especially fascinating topic for research! Our collaborative approach at COMB.AT ensures that diverse perspectives and expertise come together to achieve remarkable advancements.

Join us in this journey towards metrological excellence. By working with light that carries orbital angular momentum we will lay the groundwork for new applications in spectroscopy and for the manipulation of molecules.

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If you would like to learn more about the physics behind our research, about Special Research Programs in general, or why this topic is of such big interest to scientists, we invite you to browse in our “About” section. Keep your eyes peeled for news about upcoming events, where we love to share our passion for physics!

Interested academics, industry partners, and other experts can find out more details about our consortium and projects under “Research Groups” or take a look at our publications, conferences, or press releases in the “Impact” section.

For members of our Special Research Program, we have additional information on programs or workshops that might be of interest to you, as well as extra benefits or support from your institution, like sports activities or childcare possibilities. Find out more under “Information for SFB members”.

You are interested in joining our team of researchers in this trailblazing project? Take a look at our “Career” section, where we post any open positions in our research groups. We are looking forward to having your bright mind on our team!

 News

14.04.2026
 

The Long Night of Research is Austria’s biggest science event, which takes place all over the country. This year it will be held on Friday, 24th of...

02.04.2026
 

Our researchers from group P2 had an exciting meeting with the astrophysicists from the group of Prof. Boro Saikia.

13.03.2026
 

Ronald Maier, vice-rector of digitalisation and knowledge transfer from the university of Vienna visited one of our research groups last week and took...

09.02.2026
 

It was a pleasure having Jun Ye as a guest as part of the SFB Colloquium. His talk on “Light a quantum path for clock and fundamental physics” at the...

26.01.2026 15:30
 

As part of the SFB Colloquium Jun Ye from JILA, USA is giving a talk on “Light a quantum path for clock and fundamental physics”.

12.01.2026
 

We want to congratulate our colleagues from research groups P5 and P6 on their two recently published papers! Below you can find the abstracts and...