Our group investigates new ways of generating and controlling frequency combs — laser sources that produce many precisely tuned optical lines, acting as rulers for light. Conventional combs rely on passive mode-locking, but in liquid-like lasers (fast-gain devices with quasi-constant intensity) we can go further: resonant radio-frequency (RF) modulation transforms the spectrum into a synthetic frequency lattice, enabling near-instantaneous proliferation of comb lines and new regimes of spectral control.

This project will combine advanced numerical modeling with laboratory demonstrations to explore the physics of synthetic frequency lattices in fast-gain lasers.

• Develop simulation frameworks for frequency lattices, mapping the interplay of RF modulation, gain recovery, and nonlinear dynamics.
• Study ballistic vs diffusive transport of light in synthetic lattices, linking the problem to quantum walk physics.
• Explore how lattice engineering (periodicity, disorder, and synthetic gauge fields) controls comb bandwidth, stability, and tunability.
• Test predictions in mid-infrared quantum cascade lasers, with direct feedback between modeling and experiment.

• Background in physics, photonics, or electrical engineering, with interest in both theory and experiment.
• Experience with numerical simulations (e.g. time-domain propagation, coupled-mode theory, or nonlinear ODE/PDE solvers).
• Hands-on laboratory experience with lasers, optics, or photonic devices.
• Skills in experimental data acquisition and analysis (in Python).
• Motivation to combine computational modeling with experimental validation, in close feedback with the group.

• A unique environment combining theory, computation, and experiment at ETH Zürich.
• Close collaboration with experts in photonics, nonlinear dynamics, and topological physics, both within ETH and internationally.
• The chance to pioneer synthetic lattice physics in photonics, with applications in spectroscopy, communications, and LIDAR.

In line with our values, ETH Zurich encourages an inclusive culture. We promote equality of opportunity, value diversity and nurture a working and learning environment in which the rights and dignity of all our staff and students are respected. Visit our Equal Opportunities and Diversity website to find out how we ensure a fair and open environment that allows everyone to grow and flourish.

We look forward to receiving your online application with the following documents in a single merged PDF document, titled with your last name and initials as well as the application date (for example, 20251010_DoeJane_application) in the following order:

• Cover letter detailing your research motivation, interests, and experience
• Curriculum Vitae (CV)
• Academic transcripts of all degrees in English (Bachelor’s and Master’s)
• Three professional reference contacts, including an email and a direct phone number to reach them
• A publication or thesis work sampling your academic reasoning and writing

Please note that we exclusively accept applications submitted through our online application portal. Applications via email or postal services will not be considered.

Further information about the Physics departement can be found on our website www.webseite.ethz.ch. Questions regarding the position should be directed to Mr Alexander Dikopoltsev, [email protected] (no applications).

We would like to point out that the pre-selection is carried out by the responsible recruiters and not by artificial intelligence.

ETH Zurich is one of the world’s leading universities specialising in
science and technology. We are renowned for our excellent education,
cutting-edge fundamental research and direct transfer of new knowledge
into society. Over 30,000 people from more than 120 countries find our
university to be a place that promotes independent thinking and an
environment that inspires excellence. Located in the heart of Europe,
yet forging connections all over the world, we work together to
develop solutions for the global challenges of today and tomorrow.