PhD student position

Nonlinear photonics

Ref. 2019-38

Project description

We are seeking a highly motivated candidate for a PhD position in the project MICROCOMB – “Applications and Fundamentals of Microresonator Frequency Combs”, a Marie Skłodowska-Curie Innovative Training Network funded by the European Union.

IBM has developed technology to fabricate devices made of high-quality, epitaxially-grown gallium phosphide (GaP) on low-refractive-index substrates. Using this new platform for integrated photonics, the PhD student will explore Kerr frequency comb formation in GaP microresonators and investigate the formation of temporal dissipative solitons to generate ultrashort pulses from a continuous-wave laser. The work involves simulation, design, and fabrication of highly miniaturized photonic devices, laser-based optical characterization, and high-speed electronic measurements. 

The PhD student will work in the Quantum Technologies group at IBM Research GmbH and be mentored by Dr. Paul Seidler.  Professor Tobias Kippenberg at the École Polytechnique Fédérale de Lausanne will serve as the official PhD advisor.

The successful candidate will enjoy an internationally competitive salary and work with collaborative and creative groups in an exclusive research environment. 

The position is available immediately.


  • A Master’s degree in Engineering or Physics,
  • An outstanding academic record,
  • Good communication and English-language skills.

Application is open to both EU and non-EU nationals. The rules for this position require that the candidate has not resided or carried out his/her main activity (work, studies, etc.) in Switzerland for more than 12 months during the past three years.

Preference will be given to applicants with at least one publication in a peer-reviewed journal. Previous research experience in optics, numerical simulation or nanoscale fabrication would be beneficial.


IBM is committed to diversity at the workplace. With us you will find an open, multicultural environment. Excellent flexible working arrangements enable both women and men to strike the desired balance between their professional development and their personal lives.

How to apply

Please send a single PDF file containing a cover letter, curriculum vitae, transcripts, and contact information for at least two references to .