Principal Investigator

Johannes FinkJohannesFink_1000
Assistant Professor

Johannes received a Master’s degree in physics from the University of Vienna. At ETH Zurich he conducted a PhD in the Wallraff group for which he was awarded the ETH Medal in 2010. After a PostDoc at ETH he became an IQIM Postdoctoral Scholar and a senior staff scientist in the Painter group at the California Institute of Technology. In January 2016 he started the Quantum Integrated Devices laboratory at IST Austria.

Websites: QuantumIDs, Fink group


IMG_73592Liu Qiu
Cavity Quantum Electrooptics and Optomechanics

Liu received his bachelor degree from Nanjing University in condensed matter physics, and obtained his PhD from Swiss Federal Institute of Technology Lausanne (EPFL) in 2020 in the group of Prof. Tobias Kippenberg. He worked in the field of quantum optomechanics, with his thesis titled “Quantum measurement of mechanical motion close to the standard quantum limit”. He joined the group during the Covid winter in 2020 as an ISTfellow and works on cavity quantum electrooptics and optomechanics. 

Yuan Chenphoto1.jpg
Optomechanics, Silicon Photonics

Yuan recently won the ISTplus fellowship and will join the group in the summer of 2019. She obtained her PhD degree from the University of Science and Technology of China under the supervision of Prof. C. -H. Dong. Her thesis ‘Nonreciprocity based on cavity optomechanical systems’ showed new effects in cavity optomechanics with silica microspheres. In 2016 she won the national scholarship for graduate students and in 2017 she received the best poster award at the 653. WE-Heraeus-Seminar on Optical Microcavities and their Applications in Germany. Email:


William Hease
Quantum Electrooptics

William recently obtained the IST+ post-doctoral fellowship and will join the group in January 2018. He received his PhD degree from the Université Paris Diderot in France, under the supervision of Ivan Favero. His thesis mainly involved micro-fabrication of Gallium Arsenide disk resonators and cryogenic optomechanical experiments. He obtained his master of science from the university of Arizona’s College of Optical sciences. William won the ISTplus fellowship to work on electrooptic frequency conversion. Email:


Martin Zemlicka
Superconducting Qubits

Martin studied physics at the Comenius University in Bratislava, Slovakia. During his master’s degree, he won the first place in Czech-Slovak Student Scientific International Conference in the field of applied physics, and defended his diploma thesis titled ‘Measurement and numerical analysis of superconducting coplanar resonators’. Following graduation, he started his PhD study as a part of Prof. Grajcar’s group and as a co-investigator of the European IQIT (Integrated Quantum Information Technology) project. He earned his PhD in 2016 with the dissertation thesis ‘Physical phenomena in disordered superconductors’ in which he analyzed prospective materials for superconducting nanotechnology applications. He received a postdoctoral fellowship from the Slovak academic information agency (SAIA) to work at IST Austria in the summer of 2017. Email:

PhD Students


Andrea Trioni
High Impedance Circuits and Qubits

Andrea completed his BSc in Engineering Physics at Politecnico di Milano with an experimental thesis characterizing a superconducting YBCO sample. In 2015, he worked at the Laboratoire Matériaux et Phénomènes Quantiques (MPQ) in the group of Quantum Physics and Devices (QUAD) on microcavity shapes for patch antenna arrays with the goal to enhance the performance of quantum THz detectors. He spent a fabrication intense internship in our group to investigate the mesoscopic physics in ultra-high impedance Josephson junction circuits and spent a year in the Nanophysics and Nanotechnology track of the Engineering Physics MSc at PdM. Andrea then joined the IST graduate school and affiliated in the summer of 2019. Email:

Rishabh SahuRishabh SAHU_2206
Quantum Electrooptics

Rishabh completed his bachelor’s and master’s degree in Physics at the Indian Institute of Technology, Kanpur. His research mainly involved studying orbital angular momentum of light, in particular, sorting photons in this basis to get a multidimensional basis for photons. These research efforts were published in Optics Express. His master’s thesis involved simulating Maxwell’s equation using Finite Difference Time Domain (FDTD) method.  Rishabh started graduate school at IST Austria and the Vienna Doctoral Program on Complex Quantum Systems (CoQuS) in fall of 2018 and joined the group in 2019. Email:

44453476_1082295528644301_9029651724561809408_o.jpgRiya Sett
Microwave Quantum Optics

Riya completed her MSc. in Photonics from Aix-Marseille university, Marseille and Universitat Politècnica de Catalunya, Barcelona through the Erasmus Mundus Europhotonics Masters program. As a scientific assistant at the Karlsruhe Institute of Technology, Germany, she worked on superconducting microwave resonators in a flip-chip geometry under the supervision of Dr. Martin Weides in the Ustinov group. During her master thesis in the Quantronics group at CEA Saclay, she worked on Josephson parametric amplifiers with flux-tunable SQUID arrays under the supervision of Dr. Denis Vion. Riya joined IST as a PhD student in October 2018. Email:

Farid Hassani Bijarboonehimg_20170316_153553.jpg
New Superconducting Qubits

Farid graduated with a master of electrical engineering from K. N. Toosi University of Technology in Tehran under the supervision of Dr. Farshid Raissi. In his master thesis he investigated the exponential behavior of the I-V curve in high Tc superconductors by introducing a new mechanism for vortices and anti-vortices, which was published in Applied Physics Letters in June 2014. After graduation, he joined Dr.Raissi’s team to work on fabrication of superconducting circuits based on Nb/AlOx/Nb Josephson junctions technology. Farid joined IST as a PhD student in September 2017. Email:

Georg Arnoldbewerbungsfotoga
Optomechanics, Electromechanics, Silicon Photonics

Georg accomplished his MSc in Engineering Physics at the Graz University of Technology in the group of H. Plank. There he used additive particle beam based fabrication techniques for the development of a nano-mechanical gas sensor. His research was awarded with the Advancement Award of the Graz University of Technology and the Research Scholarship sponsored by the Chamber of Commerce. Georg visited the group for four months from Nov 2016. Now he is a PhD student of the IST graduate school, the Vienna Doctoral Program on Complex Quantum Systems (CoQuS) and he recently won a DOC fellowship. Email:

Elena RedchenkoV2k-of3uWFk
Quantum Optics with Collective Qubit States

Elena completed her bachelor’s and master’s degrees in Applied Mathematics and Physics at Moscow Institute of Physics and Technology. Also she was a part-time engineer at the Theoretical department at Institute for Spectroscopy, Russian Academy of Science, where she studied subradiant states of qubit ensembles. Elena started graduate school at IST Austria in the fall of 2016 and joined the group in May 2017 and recently won a DOC fellowship. Email:

Matilda PeruzzoMatilda Peruzzo - photo
High Impedance Circuits and Qubits

Matilda completed a Physics Msci at King’s College London. Her research there mainly revolved around light scattering in photonic glass in the context of random lasing and thermoelectric materials. In the fall of 2015 she started graduate school at IST Austria, here she plans to pursue research in the field of experimental quantum optics and optomechanics. Matilda recently won the Pöttinger scholarship of the IST Austria graduate school. Email:


img_20202518Lucky Kapoor
Research Intern

Lucky completed his Bachelor’s degree in Electrical & Electronics Engineering and Master’s in Physics at Birla Institute of Technology & Science, Pilani in India. He will join the group in mid January 2021. For his Master’s thesis, he studied the resonance structure of van der Waals antiferromagnet CrCl3 at Tata Institute of Fundamental Research (TIFR) under the supervision of Prof. Mandar Deshmukh. After graduation, he continued in the same group as a junior research fellow and worked on coupling of magnons in CrCl3 with microwave photons in NbN superconducting resonators. The findings from his work at TIFR were published in Advanced Materials and Applied Physics Letters.

photo5771871760591991631Dante Loi
Master thesis student

Dante graduated with a bachelor of electrical and electronic engineering from the University of Cagliari (Italy) under the supervision of professor Luciano Colombo and Dr. Aleandro Antidormi. In his bachelor thesis he developed a novel computational model for the simulation of Supersonic Cluster Beam Deposition nanogranular films. He did an internship at the Sardinian Laboratory for Computational Material Science and also spent one year studying abroad at the engineering physics department of the Lodz Institute of Technology (Poland). Dante will join IST in September 2020 for working on his master thesis project.

Przemyslaw ZielinskiPrzemysław Zieliński
Research intern

Przemek graduated from the University of Warsaw with the Bachelor’s degree of Physics (Creation of entanglement in indirectly interacting particles) in September 2017 and with the Master’s degree (Tight-binding method for electronic states of non-periodic carbon nanostructures) of Mathematical and Computer Modelling of Physical Phenomena in December 2019. During his Master studies he started working as a Data Scientist/Engineer. After one year he was promoted to the position of Research Specialist and C++ Software Developer in Research and Development Department. Also, he did an internship at Polish Academy of Science in the Michal Matuszewski group, where Gross-Pitaevskii equations with usage of the Thomas-Fermi profile in Bose-Einstein Condensate and exploring squeezed quantum states were solved by group of interns. After years of studying and joining Computer Science and Physics he wants to combine these fields into Quantum Devices / Computing. In his work he would like to work on all three aspects: theory, experimental work and software engineering.

LukaDrmicLuka Drmić
Software Developer

Luka finished his bachelors and masters in computer science and programming at the Department of Professional Studies at the University of Split, Croatia in September 2018. He joined IST in March 2018 to develop and improve measurement and analysis software in both the Katsaros and Fink groups. Email:

Former Members

  • Matthias Wulf (now at TDK Electronics), Silicon photonic optomechanical transducers, PostDoc, Jan 2016 – Oct 2020.
  • Alfredo Rueda (now at Scantinel Photonics), Microwave – Optical Conversion with Lithium Niobate WGM Resonators, Visiting PhD Student, 2016 – 2018 and PostDoc, 2019-2020.
  • Sebastian Wald (MA, TU Vienna), WGM filter design and coupling, IST Rotation Student, 2020.
  • Denise Puglia (MA, University of Copenhagen), Flip-Chip based Opto-Microwave Coupler, IST Rotation Student, 2020.
  • Olivér Sági (MA, Budapest University of Technology and Economics), Mixer calibration for quantum tomography measurement, IST Rotation Student, 2019.
  • Soham Mukhopadhyay (MA, IIT Bombay), Loss Channels Mitigation and DesignOptimization of Superconducting Circuits in Sonnet, IST Rotation Student, 2019.
  • Shabir Barzanjeh (now Assistant Professor at IQST at the University of Calgary), Microwave cavity optomechanics and quantum optics, Postdoc 2016-2020.
  • Duc Phan (MA, TU Vienna), Time dependence of the photon blockade breakdown, IST Rotation Student, 2019.
  • Maria Zelenayova (BA, Comenius University, Bratislava), High impedance planar coil simulations with COMSOL Multiphysics, Summer Research Intern, 2019.
  • Francisco Martinez-Checa (BA, Durham University), Microwave-optical field correlation measurements, Summer Research Intern, 2019.
  • Mariia Labendik (MA PhysTech, Moscow), Characterization of a Josephson Parametric Amplifier, Summer Research Intern, 2018.
  • Alex McKeehan (BA Stanford), Tunable dipole coupling of transmon qubits, Summer Research Intern, 2018.
  • Moritz Laber (BA KIT), Design of a slotted nanobeam cavity and
    simulation of fiber-to-waveguide coupling, Research Intern, 2018.
  • Andrea Trioni (BA Politecnico di Milano), Fabrication and Characterization of geometric Superinductors, Intern, 2017 – 2018.
  • Joshua Milem (BA Michigan State University), Digital Downconversion and Spectroscopy with VIP, IST Rotation Student, 2018.
  • Dylan Lewis (MA Oxford University), Microwave quantum state tomography with VIP, Research Intern, 2017.
  • William Hughes (MA University of Cambridge), Modelling of geometric fluxonium and phase slip qubits, Summer Research Intern, 2017.
  • Donald Swen (double BA, Willamette University, Oregon and Columbia University, New York City), Designing Slotted Photonic Nanobeams with High Quality Factors and High Optomechanical Coupling using MATLAB/COMSOL LiveLink Scripting, Summer Research Intern, 2017.
  • Nikolaj Kuntner (PhD, German Aerospace Center), QuantumIDs’ Python virtual instrument panel (VIP), Software Developer, 2016-2017.
  • Mike Hennessey-Wesen (BA McDaniel College, Maryland), Determination of Noise Temperature and Gain in Cryostats, IST Rotation Student, 2017.
  • Jason Jung (MA TU Vienna), Implementation of a Dual-Channel Waveform Digitizer for Time-Resolved Superconducting Qubit Measurements, IST Rotation Student, 2017.
  • Tobias Bilgeri (MA UPMC Paris), Design and testing of an automated microwave carrier cancellation board, Summer Research Intern, 2016.
  • Pradyumna Paranjape (MA LMU Munich), Finite element design and optimization of acoustic and photonic devices, Summer Research Intern, 2016.
  • Andreas Butler (BA University of Virginia), IQ Upconversion and Downconversion for Control and Measurement of a Superconducting Qubit, Summer Research Intern, 2016.
  • Matias Iglesias (MA Universidad de Buenos Aires), Compact Circuit QED on Silicon, Summer Research Intern, 2015.

Group Visitors

2021: webinar: Gianluca Aiello (CNRS)

2020: Sorin Paraoanu (Aalto), Alexander Poddubny (Ioffe), webinar: Tom Stace (University of Queensland), Junxin Chen (Copenhagen), Liu Qiu (EPFL)

2019: Cindy Regal (University of Colorado & JILA), Andrés Rosario Hamann (University of Queensland), Suman Kundu (TIFR India), Daniel Szombati (University of Queensland), Matt Matheny (Caltech), Yutaka Shikano (Keio Quantum Computing Center), Harald Schwefel (University of Otago), Boris Shteynas (Massachusetts Institute of Technology), Christoph Simon (Calgary), Peter Rabl (TU Vienna), Stefan Filipp (IBM Rüschlikon), Nicholas Lambert (Otago), Andreas Wallraff (ETH), William Oliver (MIT), Peter Jacobson (University of Queensland)

2018: Ali Salari (Cologne), Yoichi Ando (University of Cologne), Stefan Rotter (TU Vienna), Timothy Duty (University of New South Wales), Amin Hosseinkhani (Jülich), Nenad Kralj (Camerino), Peter Burns (JILA), Teresa Hoenigl-Decrinis (Royal Holloway), Arpit Ranadive (TATA), Arne L. Grimsmo (University of Sydney), Andrew Cleland (Chicago), Yasunobu Nakamura (University of Tokyo), Rupert Ursin (Vienna)

2017: Martin Zemlicka (Comenius University), Sungkun Hong (Uni Wien), Konrad Lehnert (JILA), Rainer Blatt (Uni Innsbruck), Arno Rauschenbeutel (TU Wien), Christoph Simon (University of Calgary), Daniel Greif (Harvard University), Harald Schwefel (University of Otago), William Hease (University Paris Diderot-Paris7), Johannes Majer (TU Wien), Oskar Painter (Caltech), Jean-Michel Raimond (ENS Paris), Pertti Hakonen (Aalto), Fabian Hassler (RWTH), Lisa Arndt (RWTH Aachen)

2016: Can U Lei (Yale University), David DiVincenzo (RWTH Aachen), Fabian Hassler (RWTH Aachen), Andreas Wallraff (ETH Zurich), Ondrej Cetornik (Hannover University), Gerhard Kirchmair (IQOQI Innsbruck)