PhD researcher

Johan Kolvik

Johan received his BSc and MSc in Physics at Chalmers University of Technology in 2021, where he worked with multi-membrane cavity optomechanics. Later in the same year, he joined QPL and is now a PhD student with interests in design, fabrication and characterization of scalable hybrid quantum systems with emphasis on silicon optomechanics. In his free time, Johan enjoys reading, socializing and performing on stage with the local showman group Gosskören.

PhD researcher

Joey Frey

Joey received his MSc in Nanotechnology at Chalmers University of Technology in 2020, where he worked on characterization of single photon emitters in 2-dimensional tungsten diselenide flakes. In 2021 he joined QPL as a PhD student with focus on quantum transduction and quantum acoustics utilizing heterogeneous integration. In his free time he enjoys climbing, board games and traveling.

PhD researcher

Paul Burger

Paul received his BSc in Germany at JGU Mainz and MSc in Physics at JGU Mainz & Gothenburg University in 2021, where he worked with magnetic nanoparticles and their proximity effects on a two dimensional electron gas. He is now a PhD student in Quantum Technology and joined QPL in spring of 2022. Paul focuses on the design, fabrication and measurement of hybrid quantum systems mixing optomechanics, electromechanics and superconductivity. In his free time Paul enjoys bouldering and improving his Swedish skills.

PhD researcher

Trond Hjerpekjøn Haug

Trond received his MSc in Nanotechnology from the Norwegian University of Science and Technology in 2020, where he studied spin waves in 2D antiferromagnetic insulators. Before starting his PhD, Trond worked as an engineer at Sensonor AS developing dry etch processes for MEMS sensors. He joined QPL as a PhD student in the summer of 2022 and focuses on hybrid microwave-optical architectures for quantum technologies enabled by quantum transducers, as well as solutions to heating in optomechanical transducers. In his free time Trond likes hiking, skiing and reading.

PhD researcher

David Hambraeus

David has recieved his BSc, and expects to receive his MSc, in Physics at Chalmers University of Technology. During his master, he specialized in computational physics and quantum information processing. He joined QPL in the spring of 2023 to write his MSc thesis on inverse design of hybrid electro-optomechanical quantum devices, and now continues in the group for his PhD research. In his free time he enjoys hiking, skiing, swimming and climbing, as well as reading fantasy, playing board games, and singing (though mostly to himself).

Principal investigator

Assistant Professor

Raphaël Van Laer

Raphaël leads an interdisciplinary research team in photonics and quantum technologies at Chalmers University of Technology. He explores the flow of and interactions between light, sound, and microwaves for quantum information processing. See here for his short CV.

He received a PhD in silicon photonics at Ghent University-imec (Photonics Research Group), making contributions to integrated nonlinear optics and optomechanics. The results were recognized with an IEEE Graduate Student Scholarship and a VOCATIO award. Afterwards he worked mainly on thin-film lithium niobate, heterogeneous photonic integration, and quantum microwave-to-optics conversion as a Marie Skłodowska-Curie postdoctoral fellow at Stanford University (LINQS). His team is supported by the Wallenberg Centre for Quantum Technology, the Swedish Foundation for Strategic Research with a Future Research Leader Grant, and by the European Research Council with a Starting Grant.

His research revolves around two overarching questions. First, what are the physical limits to information processing in a constrained space? Second, can we realize large-scale coherent communication, sensing, and computation?

Co-advising with Victor Torres-Company

PhD researcher

Yi Sun

Yi is a PhD student in the Ultrafast Photonics Laboratory. She graduated from Zhejiang University (China) in March 2021. Her research topic is the heterogeneous integration of ultralow-linewidth lasers and microcombs on the silicon nitride platform. She is learning all nanofabrication techniques for the ultra-low-loss silicon nitride waveguides and ultra-high-Q microresonators, and is constructing hybrid lasers based on microtransfer printing technology.

PhD researcher

Sara Persia

Sara received her BSc in Engineering Physics at Polytechnic University of Turin and her MSc in Engineering Physics – Quantum Technologies at Royal Institute of Technology KTH in 2022, where she worked on the design, fabrication and characterization of a kinetic inductance parametric amplifier. In the same year, she joined the Ultrafast Photonics Lab at Chalmers University of Technology as a PhD student. Her main topic of research is quantum information processing using ultra-low loss silicon nitride nanophotonics devices. In her free time, Sara likes reading, skiing and traveling.

Co-advising with Jochen Schröder and Victor Torres-Company

PhD researcher

Yan Gao

Yan Gao gained his master degree in optical engineering from Zhejiang university, China. Now he works as a Ph.D. student in the department Microtechnology and Nanoscience (MC2), Chalmers. His research interests include on chip high-speed lithium niobate modulators, optical and microwave cavities, nonlinear optics and their applications. In his Ph.D. project, he mainly works with thin-film lithium niobate platform and his work include device design and nanofabrication.

Co-advising with Simone Gasparinetti

PhD researcher

Simon Sundelin

Simon Sundelin received his BSc and MSc in engineering physics at Chalmers University of Technology in 2022. He is now a PhD student in the quantum technology laboratory at Chalmers focusing on quantum thermal machines such as quantum clocks and heat engines. In his free time Simon enjoys rock climbing and scuba diving.


MSc researcher

Nils Ciroth

Nils received his BSc in Physics at RWTH Aachen University in 2021, where he worked on the simulation of semiconductor electron shuttling. During his MSc studies, he did an exchange year at Chalmers University of Technology, where he aquired broad knowledge about quantum computing hardware and theory. Subsequently, he joined QPL for a research internship. He successfully worked on the setup of optical experiments in both hardware and software as well as on superconducting resonator design. Now, he is pursuing his MSc thesis at RWTH Aachen University, where he is working on improving semiconductor quantum computing hardware.

MSc researcher

Halldór Jakobsson

Halldór received his BSc at the University of Iceland and expects to receive his MSc in Nanotechnology at Chalmers University of Technology in 2024. He joined QPL in 2022 in preparation for his MSc thesis and has thus far been working on laser locking. In his free time, he enjoys reading, listening to music and watching football.