PhD Candidate in thin film lithium niobate nanofabrication

100%, Zurich, fixed-term

The Optical Nanomaterial Group in the Physics Department at ETH Zurich is looking for a PhD candidate in thin film lithium niobate nanofabrication. Photonic integrated circuits promise advanced functionality for applications such as quantum information processing and precision sensing. Thin film lithium niobate (TFLN) is a maturing photonics platform that can integrate frequency conversion, quantum light sources and high speed electro-optic modulation on a single device.

Job description

In the Optical Nanomaterial Group, we specialize in the nanofabrication and optical characterization of TFLN photonic circuits. While the fabrication process is at an advanced stage, further optimization is necessary for lower optical losses, increased component performance, and improved interfacing with optical fibers. The advertised position will work on two main projects: (1) TFLN circuit development for quantum key distribution and (2) TFLN circuit development for quantum enhanced precision measurements.

This PhD project aims to further advance the nanofabrication of TFLN photonic circuits at ETH Zurich, including all the processing steps required for low loss and reliable waveguides, developing new components such as efficient edge couplers, and future integration of new materials and processes. The PhD candidate will become an expert in numerous fabrication techniques such as electron beam lithography, physical and chemical etching, deposition and electron microscopy. In addition, the project will involve optical simulations, mask design and optical characterization.

Profile

The successful candidate should be highly motivated and creative, should have a Master’s degree in physics, nanotechnology, material science, photonics or related fields, and be interested in working in an interdisciplinary environment at the interface of quantum photonics and material science. This PhD position will involve significant effort in nanofabrication, and any cleanroom experience will be highly beneficial.

Workplace

We offer

• Your job with impact: Become part of ETH Zurich, which not only supports your professional development, but also actively contributes to positive change in society
• You can expect numerous benefits , such as public transport season tickets and car sharing, a wide range of sports offered by the ASVZ , childcare and attractive pension benefits

We value diversity and sustainability

Curious? So are we.

We look forward to receiving your application including:

• a cover letter
• your CV
• transcripts of Bachelor’s and Master’s degrees
• contact information of two referees

The earliest start date is 1st May 2026.

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

For further information please contact Dr Robert Chapman (E-Mail schreiben) or visit our website .

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.