Fink Group
Quantum Integrated Devices
The Fink group’s research is positioned between quantum optics and mesoscopic condensed matter physics. The team studies quantum physics in electrical, mechanical, and optical chip-based devices with the goal of advancing quantum technology for simulation, communication, metrology, and sensing.
One of the Fink group’s goals is to develop a router that converts a microwave photon to an optical photon with near-unity efficiency. With such devices, the researchers seek to perform quantum communication between superconducting circuits via robust fiber optic links at room temperature. Another focus area of the team is to develop new qubit-encoding concepts that offer intrinsic protection from noisy environments. The group has observed fluxon lifetimes of more than three hours in a recently demonstrated superconducting qubit and is exploring new concepts of dynamical control to implement nanosecond timescale quantum gates in such circuits.
Group Leader
Administrative Support
Team
Current Projects
Circuit and waveguide quantum electrodynamics | Quantum electro- and optomechanics | Quantum electro-optics and microwave photonics | Ultra-high impedance physics | Hardware-protected qubits | Multi-qubit quantum electrodynamics | Resonant nonlinear optics
See the group website for up to date projects.
Publications
Janik M, Roux KER, Borja Espinosa CN, Sagi O, Baghdadi A, Adletzberger T, Calcaterra S, Botifoll M, Garzón Manjón A, Arbiol J, Chrastina D, Isella G, Pop IM, Katsaros G. 2025. Strong charge-photon coupling in planar germanium enabled by granular aluminium superinductors. Nature Communications. 16, 2103. View
Redchenko E, Zens M, Zemlicka M, Peruzzo M, Hassani F, Sett R, Zielinski PD, Dhar HS, Krimer DO, Rotter S, Fink JM. 2025. Observation of collapse and revival in a superconducting atomic frequency comb. Physical Review Letters. 134(6), 063601. View
Arnold GM. 2025. Microwave-optic interconnects for superconducting circuits. Institute of Science and Technology Austria. View
ReX-Link: Johannes Fink
Career
Since 2021 Professor, Institute of Science and Technology Austria (ISTA)
2016 – 2021 Assistant Professor, Institute of Science and Technology Austria (ISTA)
2015 – 2016 Senior Staff Scientist, California Institute of Technology, Pasadena, USA
2012 – 2015 IQIM Postdoctoral Research Scholar, California Institute of Technology, Pasadena, USA
2011 – 2012 Postdoctoral Research Fellow, ETH Zurich, Switzerland
2010 PhD, ETH Zurich, Switzerland
Selected Distinctions
2023 ERC Consolidator Grant
2018 Fritz Kohlrausch Award
2017 ERC Starting Grant
2012 IQIM Postdoctoral Prize Fellowship
2010 ETH Medal for Outstanding Dissertation
2009 CSF Award at the QSIT Conference on Quantum Engineering
