The Group

Prof. Yiwen Chu, group leader

After doing my undergraduate studies at MIT, I moved down the street to Harvard, where I did my PhD studying quantum optics with nitrogen-vacancy centers in the group of Prof. Mikhail Lukin. Wanting to try out a different quantum system, I worked on circuit QED as a postdoc in the group of Prof. Rob Schoelkopf at Yale. Through collaborations with the group of Prof. Peter Rakich (also at Yale), I also added quantum acoustics and optomechanics to my repertoire.

Office: HPF F9, phone: +41 44 633 81 50,  email:

Dr. Matteo Fadel, Branco Weiss and SNSF Ambizione fellow

My passion for science led me to begin studying physics at the University of Padova (Italy). After a Master at ETH Zurich, I joined for my PhD the group of Prof. P. Treutlein in Basel, where I investigated multipartite quantum correlations in Bose-Einstein condensates. Afterwards, I stayed a bit longer in Basel to setup an experiment for the optical manipulation of the nuclear spin in Helium-3 gas, a system with week-long coherence time! Motivated by the interest in exploring quantum effects in macroscopic objects, and by a passion for experimental music, I joined the HyQu group with the dream of manipulating sound at the quantum level to explore the boundaries of quantum mechanics. Currently, I am also developing a bosonic quantum simulator using acoustic vibrations.

Office: HPF F10, phone: +41 44 633 30 38, email: fadelm(at)phys.ethz.ch

Dr. Samuel Pautrel, Postdoc

I did my undergrad studies at ESPCI Paris, France, where I studied physics, chemistry and biology for three years. Two internships, one on a JPA, the other on a squeezing-enhanced atomic clock confirmed my preference for physics. I specialized in condensed matter physics during a second year of master at ENS Paris. My interest in quantum optics and experimental challenges led me to apply for a PhD in quantum optomechanics with GaAs disk resonators in the group of Ivan Favero (Université Paris Cité), which I defended in November 2023. Wanting to keep working in the field of quantum acoustics and to explore ways of hybridizing phonons to other quantum degrees of freedom, I joined the group in January 2024.

Office: HPF G4.2, phone: +41 44 633 89 91, email: 

Simon Storz, Postdoc

During my physics studies at ETH Zürich, I developed a deep interest in the properties of quantum mechanics. This fascination led me to pursue a PhD in the Quantum Device Lab under Prof. Andreas Wallraff, focused on storing and manipulating quantum information using superconducting circuits. There, we successfully interconnected remote quantum circuits over distances up to 30 meters through a cryogenic microwave link. In this system, we demonstrated a loophole-free Bell test and applied the quantum-mechanical resource of non-locality to information processing. The compelling prospects of coupling superconducting circuits with phonons—both for fundamental physics and quantum information processing—motivated me to start a postdoctoral position in the Hybrid Quantum Systems Group in April 2024.

Office: HPF F3, phone: +41 44 633 22 41 email:

Chris Adambukulam, Postdoc

For my undergraduate degree, I studied electrical engineering at the University of New South Wales in Sydney, Australia. My interest in quantum technologies began with an internship in the group of Prof. Andrea Morello concerning the electronic and nuclear spins of single donor atoms in silicon. After completing my undergraduate degree, I decided to do a PhD under the supervision of A/Prof. Arne Laucht and Prof. Andrea Morello, investigating the electronic and nuclear spin properties of single germanium vacancies in diamond. I was awarded my PhD in 2024, and following which, I decided expand my knowledge of quantum technologies by joining the HyQu group as a postdoc and studying the interactions between single spins and phonons.

Office: HPF G3.1, phone: +41 44 633 41 50, email:

Alexander Anferov, Postdoc

During my undergraduate studies at Caltech, I worked on parametric amplifiers in Prof. Oskar Painter's lab. Afterwards, I transitioned to a new frequency range, studying millimeter-wave superconducting quantum devices with Prof. David Schuster at the University of Chicago. After completing my PhD, I spent a year exploring microwave qubit fabrication techniques with Prof. Andrew Cleland. Now looking to branch out into different flavors of quantum systems, I joined the lab to explore applications of quantum acoustic resonators.

Office: HPF G3.1, phone: +41 44 633 39 51 , email:

Hans Beukers, Postdoc

After completing my degrees in physics and medicine at the University of Groningen, I pursued my interest in quantum mechanics with a PhD in the group of Ronald Hanson at QuTech, Delft University of Technology. My research focused on diamond color centers. We used these centers to create the first three-node quantum network, and I worked on advancing the quantum control of nearby nuclear spins, which serve as quantum memory qubits. In August 2025, I joined the HyQu group as a postdoctoral researcher, working on microwave-to-optics transduction with the goal of bringing quantum networks to superconducting qubits.

Office: HPF F10, phone: +41 44 633 30 38, email: 

Rémi Rousseau, Postdoc

After completing my undergraduate studies at École Polytechnique in Paris, I embarked on a joint PhD between the quantum‑computing startup Alice & Bob and Samuel Deléglise’s team at the Laboratoire Kastler‑Brossel, which I defended in 2025. During my doctorate I worked on two different topics: engineering dissipatively stabilized squeezed‑cat qubits and coupling low‑frequency fluxonium qubits to a membrane mechanical resonator. Drawn to the idea of uniting these approaches, I joined the Hybrid Quantum Systems group in January 2026.

Office: HPF G3.2,  phone: +41 44 633 91 48, email: 

Arianne Brooks, Doctoral student

Originally from mainland Denmark, I moved to Copenhagen to study physics at the University of Copenhagen in 2016. During an exchange programme at LMU in Munich I developed a passion for optics and laser physics, after which I joined the HyQ research centre at the Niels Bohr Institute in Copenhagen where I wrote both my bachelor and master thesis about applying near-infrared GaAs quantum dots for quantum information processing. Being highly interested in quantum technology advances in hybrid platforms, I joined the Hybrid Quantum Systems group at ETH in 2022 to do my PhD.

Office: HPF F3,  phone: +41 44 633 22 41,  email:

Stefano Marti, Doctoral student

Towards the end of my Bachelor's degree, I fell in love with quantum information. I therefore took as many related courses as possible, while completing both a theoretical semester project about two-photon emission in tunnel junctions and a practical project at the Quantum Optics group under supervision of Prof. Esslinger, implementing an image processing algorithm on a FPGA for laser beam stabilization. After this, I realized that I was highly motivated to learn about different kind of quantum systems and their interactions, which led me to conduct my master's thesis at the HyQu group, investigating in particular a radiation loss mechanism affecting qubit lifetimes. I was so fascinated by the interplay of systems that I went on and started my PhD beginning of January, continuing the work on cQAD.

Office: HPF G4.1,  phone: +41 44 633 91 48,  email:

Andraz Omahen, Doctoral student

I obtained my undergraduate degree in my hometown at the University of Ljubljana and came to ETH for my masters in Physics. During the course of my degree I explored various quantum systems by joining the groups of Prof. Andreas Wallraff and Prof. Jonathan Home for a semester project. Furthermore, I worked with bilayer graphene quantum dots for my masters thesis in the Ensslin group. Having explored different areas of quantum physics, I am eager to apply my knowledge and experience in the Hybrid Quantum Systems Group, where I started my PhD in March 2023.

Office: HPF F10,  phone: +41 44 633 30 38,  email:

Stefan Pfleging, Doctoral student

I gained my first experimental experience in the field of lithium-ion batteries within the frame of my job as student assistant, which I was able to start already in the first semester of my bachelor’s studies at Karlsruhe Institute of Technology (KIT) in Germany. They were concluded by my thesis about Whispering Gallery Mode Resonators in the Group of Prof. Heinz Kalt. After addressing classical optics with this project, I got more interested in quantum optics and solid state physics during my master’s studies at KIT. This is why I decided to work for the thesis in the Group of Prof. Wolfgang Wernsdorfer on quantum emitters in hexagonal boron nitride and their Stark tuning at room and low temperature. After being able to control quantum emitters to a certain degree, it seemed logical to me to try to incorporate them in more complex systems, which is what I will try to accomplish during my PhD studies in Hybrid Quantum Systems Group, which I started in 2023.

Office: HPF G3.2,  phone: +41 44 633 91 48,  email:

Max-Emanuel Kern, Doctoral student

I started my studies in Engineering Science at TUM, in the wonderful city of Munich. I quickly realized that I was more passionated in the physics lectures and therefore pursued a Bachelor's degree in Physics at LMU alongside completing my Bachelor's in Engineering Science. Wanting to go more into experimental physics in my Master's degree, I returned to TUM for the Applied and Engineering Physics program. I conducted my thesis under the guidance of Prof. Pfleiderer, collaborating with a magnetic refrigeration cryostat start-up. Following the completion of my thesis, I had the great opportunity to spend a year in Tokyo working with Prof. Nakamura on laser-annealing of superconducting qubits. There, I also learned more about hybrid quantum systems and it helped me understand I had to pursue this topic further. With all these experiences combined, I eventually joined the HyQu group in August 2023, and I am thrilled to be here!

Office: HPF G4.1,  phone: +41 44 633 30 38,  email:

Igor Kladaric, Doctoral student

Having finished my electrical engineering bachelor studies in Zagreb, my home country's capital, I enrolled in the Quantum Engineering master's programme at ETH Zürich in 2020. During my studies here, I worked on optical trapping and cooling of nanoparticles in the ETH Photonics laboratory for my semester project, did an internship at QZabre on applications of NV center magnetometry, and explored transport properties of topological semimetals at IBM Zürich for my master thesis. Finally, after these vastly different experiences of applications in the field of quantum science, I decided to join the HyQu group in October 2023 to explore the quickly growing field of cQAD and am very excited to be a part of this team!

Office: HPF G4.2,  phone: +41 44 633 89 81,  email:

Raquel García Bellés, Doctoral student

I started my Bachelor's in Physics and Mathematics at the Autonomous University of Barcelona with the idea of becoming a pure mathematician that knows a bit about physics. However, halfway through my studies, I got catched by quantum physics and decided to change plans. During an exchange year at NTU in Singapore, I had the great opportunity to undertake a research project where I learnt about superconducting circuits, and I became fascinated by their many possible applications. After returning to Spain, I joined the group of Pol Forn-Díaz for an internship automating the calibration of qubits, and a Bachelor's thesis on adiabatic quantum computing. In 2021, I moved to Zürich to start a Master's in Quantum Engineering at ETH. I conducted my semester project and Master's thesis in the QuDev Laboratory of Prof. Andreas Wallraff, where I mainly worked on the fabrication of Josephson Junctions and the simulation and characterization of superconducting circuits. Now I am thrilled to join HyQu in March of 2024 for my PhD, where I will combine SC circuits and acoustic resonators!

Office: HPF G4.2,  phone: +41 44 633 89 81,  email:

Frederike Brockmeyer, Doctoral student

During my studies in Physics at ETH, I discovered my love for experimental research through various projects. I was drawn to quantum research due to its unique combination of fascinating theory and practical engineering work. I spend almost two years in the lab of Prof. William Oliver, working on a hybrid system of Si/SiGe quantum dots and superconducting qubits, and discovered that I particularly enjoy working with hybrid systems because they bring together different regimes and fields, making each day varied and full of unique challenges. This led me to pursue my PhD in HyQu in Summer 2025, where I work on the transduction project.

Office: HPF F3,  phone: +41 44 633 22 41,  email:

Isabelle Franzen, PhD student

During my Bachelor’s degree at ETH, I developed a strong interest in both fundamental physics and Quantum Theory and thus pursued both fields during my Master's. My passion for Quantum Theories and their applications in Quantum Computing solidified over the course of my studies, which led me to work as a research assistant in the Ion Trap Quantum Computing group. Fascinated by the broader realm of hybrid quantum systems, I decided to conduct my Master's thesis in the Hyqu group, where I investigated the generation of multipartite entanglement using optimal control methods, with a focus on GHZ, W, and Cluster states. I am excited to continue in the Hyqu group as a PhD student where I will work on Quantum Random Access Memory (QRAM).

Office: HPF F10,  phone: +41 44 633 30 38,  email: 

Arne Geipel, Research assistant

I received my Bachelor's degree in Physics from LMU Munich. For my Bachelor's project, I worked on a spatially incoherent light source for high-quality DMD potentials in Dr. Philipp Preiss' Atomic Quantum Matter group at MPQ. Impressed by the exceptional control of quantum systems at the level of individual atoms, I decided to pursue my Master's studies in Physics at ETH Zurich to further explore AMO physics and quantum information science. I carried out my semester project with the TIQI group, simulating the noise error budget for quantum error correction using GKP states. I joined the HyQu group for my Master’s thesis, where I will develop a 2D circuit architecture with tunable couplers to enable a direct phonon drive and explore the feasibility of generating phononic GKP states.

Xuheng Zhao, Semester project student

During my undergraduate studies in theoretical physics at Imperial College London, I delved into the field of AI for science, gaining research experience in applying machine learning models to optical neuromorphic computing systems, tight-binding models, and neuronal activity analysis — aiming to aid experiments, predict material behavior, and support health diagnostics. After joining ETH Zurich for my master’s in physics, my interest in quantum science stemmed from my theoretical project on simulating non-Hermitian topological phases with hardware-ready quantum circuits in Prof. Carrasquilla’s group and from winning first place in the ETH Quantum Hackathon 2025. Realizing that the key bottleneck in the field lies in hardware, I was motivated to join the HyQu group for a project on optimal control to prepare complex multipartite entangled states. I believe my theoretical and computational background equips me to become an experimentalist with a unique mindset and skill set.

Finn Müssigbrodt, Master thesis student

I completed my Bachelor in physics at ETH, where I had the pleasure of attending Prof. Chu’s lecture for Physics III. In my Master’s I developed an interest in condensed matter physics and consequently attended a proseminar on Quantum Phase Transitions with Dr. Chitra, where I studied deconfined quantum criticality in greater detail. After learning more about sensing and metrology in the last semester, I decided to shift my focus for my thesis. I am exited to join the Hybrid Quantum Systems group to help with Fock state displacement sensing on the HBAR.

Laura Schneider, Semester project student

As a student in Interdisciplinary Sciences at ETH Zurich, I have developed a strong interest in quantum science. To deepen my understanding of this field, I joined the Hybrid Quantum Systems group, where I assist Stefan and Arianne with lab work involving diamond HBARs, aiming to investigate their similarities and differences compared to those made from sapphire. Outside of my studies, I enjoy hiking and spending time with friends.

Jakob Helms, Semester project student

During my Bachelor’s, I did my Semester Project in Prof. Abreu’s group, where we explored ultrafast terahertz laser techniques and time-resolved spectroscopy to study phonon modes in TbMnO3 and Tellurium. I’ve then deepened my focus on quantum science through courses such as Quantum Information Theory and Quantum Information Processing, and I’m excited to combine superconducting circuits with high-overtone bulk acoustic resonators to realize teleportation!
Beyond the lab, I enjoy playing volleyball and basketball.

Yanze Bai, Semester project student

I am an undergraduate student at the Hong Kong University of Science and Technology (HKUST). During my studies there, I conducted research on the measurement of superconducting materials using NV centers. This experience sparked a strong interest in both color centers and superconductivity. Upon deciding to come to ETH Zurich for an exchange semester, I was immediately drawn to the Hybrid Quantum Systems group due to its fascinating research topics and novel hybrid systems. I joined the color center subgroup for my semester project, where I am investigating the effects of magnetic fields on superconducting qubits to address experimental challenges. I look forward to applying my previous knowledge and technical skills to contribute to the project.

Raphael Zumbrunn, Semester project student

In my undergrad, I worked on optically trapped micro-particles at ETH Zürich as well as Zero Field NMR at UC Berkeley. While working on the Zero Field project, I gained a renewed interest in the interaction between different types of quantum systems. Right now I'm happy to start working on simulations of membranes coupled to qubits. In my free time I am very active as a volunteer and organizer in the Science Olympiads. Besides that, I like to go snowboarding, build small electronics/coding projects, and play board games.

Kameron Lalee, Semester project student

During my Bachelor’s here at ETH, I've had more of a focus on computational physics, taking machine learning courses and completing a project in the computational cosmology group. This has shifted in my Master's, and I dove deeper into Quantum technologies, completing courses such as Quantum Information Theory and Quantum Information Processing. I am now excited to combine superconducting qubits and bulk acoustic resonators to realise a Quantum Random Access Memory!
Beyond my studies, I enjoy playing basketball and poker.

Jinlei Zhou, Semester project student

After finishing my Bachelor’s in Physics at ETH and developing a strong interest in condensed matter physics and quantum technologies, I enrolled in the Quantum Engineering master’s program. I’m eager to join the HyQu Group for my semester project and work on bunching Fock states on the hBAR!

Anna Schmitz-Floeder, Semester project student

After completing my Bachelor’s degree in Physics at RWTH Aachen University, where I initially focused on experimental astroparticle physics and gradually developed an interest in quantum technologies, I moved to Zurich to pursue a Master’s in Quantum Engineering at ETH. For my semester project in the HyQu Group, I’m working on a simulation and fidelity analysis of Quantum Random Access Memory (QRAM) protocols on hbarBAR systems. Outside of physics, you’ll most likely find me rowing or skiing.