PhD Position in Frequency Lattices and RF-Controlled Comb Dynamics / PhD Position in Frequency Lattices and RF-Controlled Comb Dynamics

PhD Position in Frequency Lattices and RF-Controlled Comb Dynamics

100%, Zurich, fixed-term

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

Project Background

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

Job Description

• 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) influences comb bandwidth, stability, and tunability.
• Test predictions in mid-infrared quantum cascade lasers, ensuring direct feedback between modeling and experiments.

Profile

• Background in physics, photonics, or electrical engineering, with a keen interest in both theory and experimentation.
• 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.
• Proficiency in experimental data acquisition and analysis (in Python).
• Motivation to integrate computational modeling with experimental validation, maintaining close collaboration with the group.

Workplace

Join a vibrant research environment at ETH Zurich, where collaboration thrives among experts in photonics, nonlinear dynamics, and topological physics—both locally and internationally.

We Offer

• A unique environment that fuses theory, computation, and experiment at ETH Zurich.
• Collaboration with leading experts in various interdisciplinary fields.
• The opportunity to pioneer synthetic lattice physics in photonics, with applications spanning spectroscopy, communications, and LIDAR.

We Value Diversity

ETH Zurich champions an inclusive culture. We advocate for equality of opportunity, celebrate diversity, and foster a working and learning environment where the rights and dignity of all staff and students are upheld. For more information, please visit our Equal Opportunities and Diversity website.

Apply Online

We look forward to receiving your online application. Please include the following documents in a single merged PDF document, titled with your last name and initials along with the application date (e.g., 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
• A publication or thesis work sampling your academic reasoning and writing

Only applications matching the job profile will be considered.

About ETH Zurich

ETH Zurich is among the world's leading universities specializing in science and technology. We are known for our exceptional education, groundbreaking fundamental research, and effective transfer of new knowledge into society. With over 30,000 individuals from more than 120 countries, our university fosters independent thinking and inspires excellence. Nestled in the heart of Europe but connected globally, we collaborate to tackle today's and tomorrow's challenges.