TU Wien

Description of the Institution

The TU Wien, with 27.000 students and 4.500 employees, is the largest technology-oriented university in Austria. It was founded 1815 and has a long-standing tradition of academic and cultural success with alumni such as Christian Doppler, Joseph Loschmidt, Otto Wagner, and Johann Strauss. Today, it is among the top universities in Europe, currently hosting 14 ERC grants (7 in physics). TU Wien offers 53 programs of study in 8 departments. The physics department is subdivided into 4 institutes, the Atominstitut (ATI) being the largest one. It holds a long tradition in quantum physics, demonstrating, e.g., the first neutron interferometer in 1974. Today, the ATI hosts a variety of research groups centered around nuclear and atomic physics with a strong emphasis on quantum optics, laser spectroscopy, and metrology.

The larger scientific environment in Vienna also comprises the University of Vienna and the Austrian Academy of Sciences’ Institute for Quantum Optics and Quantum Information with an impressive number of high-profile groups in quantum physics and quantum optics. Many groups, including the group of the PI, are part of the faculty of the Vienna Doctoral Program on Complex Quantum Systems which attracts excellent students from all over the world to join quantum physics research in Vienna. Finally, the PI is member of the Innsbruck- and Vienna-based special research program FoQuS and profits from the co-operation and lively scientific exchange with nationally and internationally leading research groups in quantum science.


Description of Main Tasks and Participant’s Profile

The role of the consortium member ATI is twofold: As the lead institution, it coordinates all project activities and also is in charge of the management work package.

In addition to leading the management, partner ATI will strongly contribute to all experimental work packages and will work together closely with UNOTT and AAR on the theory work package. ATI has gained extensive experience in ultra-strong optical nonlinearities using an experimental system in which a single Rubidium atom is strongly coupled to light guided in fibre-based whispering-gallery-mode resonator. This, e.g., allowed ATI to demonstrate a photon-number dependent phase shift of π with this system, thereby putting ATI in an excellent position to fulfil its tasks. Moreover, ATI has pioneered the trapping and interfacing of cold atoms via evanescent light fields. Recently, using either an ensembles of atoms coupled to an optical nanofiber or using the atom-resonator system, ATI demonstrated non-reciprocal propagation of guided light fields, which will be a valuable asset for the successful completion of ATI’s tasks. Moreover, ATI will, in close collaboration with UROS and FBH, develop a near-deterministic fiber-to-chip coupling for light. This activity will strongly benefit from ATI’s expertise on adiabatic optical mode transformation gained in the production of low-loss tapered optical fibres.


Leading Researchers 

  • Prof. Dr. Arno Rauschenbeutel
    Principal Investigator

    PhotoCredit: ErBeStA / Sebastian Pucher
  • Dr. Philipp Schneeweiss

    PhotoCredit: ErBeStA / Sebastian Pucher
  • Dr. Sarah Skoff
    Staff Scientist

    PhotoCredit: ErBeStA / Sebastian Pucher
  • Dr. Jürgen Volz
    Staff Scientist

    PhotoCredit: ErBeStA / Sebastian Pucher