100%, Zurich, fixed-term
We are looking for a highly motivated PhD student to join our nonlinear dynamics team. Do you have a broad interest in physics and technology? Do you like the prospect of working in an experimental project in close collaboration with theory? Are you creative, persevering, independent, and a good team player?
You can expect a cutting-edge research project that is very challenging due to the many aspects of science that are involved. For the same reason, it is a highly rewarding experience if you enjoy expanding your knowledge beyond textbook physics. We look forward to meeting you!
Project background
Is it possible to build artificial neural networks from driven nonlinear resonators? This question builds on the ideas of Hopfield and Hinton, but takes them out of equilibrium: in our resonators, a balance of continuous drive and dissipation sustains stable oscillation states. This gives us access to phenomena that are absent in equilibrium physics. For example, this may allow us to investigate how a physical network turns stored memories into dynamical patterns.
In our lab, each node is an electrical circuit or a micro-electromechanical (MEMS) resonator implementing a Kerr parametric oscillator (KPO): a driven, dissipative resonator with two stable oscillation states that act like a bit of memory. We couple several such KPOs, reading out every oscillator simultaneously and in real time. This gives us complete access to the dynamical many-body phase space. With it, we reconstruct the attractor landscape of the network, track how noise drives switching between collective states, and measure probability currents that appear when detailed balance is broken.
The central question is whether these currents organize into stable, reproducible temporal patterns and coexisting limit cycles. Networks like these bridge nonequilibrium statistical physics and neuromorphic computing, and could provide a physical route to Ising and Boltzmann machines that operate on dynamical rather than static states.
Job description
- Build and operate a programmable network of coupled KPOs with up to eight nodes, including control and readout electronics and measurement software.
- Map attractor landscapes, switching statistics and probability currents from measured trajectories.
- Compare experiment with simulations and analytical models in close contact with our theory partners (Prof. O. Zilberberg at the University of Konstanz) and publish and present your results internationally.
Profile
- You hold (or are about to complete) an MSc in physics, electrical engineering or a related field, with a solid background in nanomechanics, nonlinear dynamics, or statistical physics.
- You enjoy hands-on experimental work (electronics, signal processing, Python) and are not afraid of a bit of analytical theory.
- Experience with MEMS, lock-in detection, or FPGAs is a plus.
- You communicate well in English.
Workplace
We offer
- A four-year PhD position in the friendly Spin Physics group at ETH Zürich, with an international, stimulating environment
- Technical support from in-house electronics
- FPGA experts
- Close supervision with room for your own ideas
- Employment follows ETH Zürich standards; starting date by agreement
Working, teaching and research at ETH Zurich
We value diversity and sustainability
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. Sustainability is a core value for us – we are consistently working towards a climate-neutral future.
Curious? So are we.
We look forward to receiving your online application with the following documents:
- CV
- A short motivation letter
- Your BSc and MSc transcripts
- The contact details of two reference persons
Further information about Spin Physics can be found on our Website. Questions regarding the position should be directed to Alexander Eichler, eichlera@ethz.ch (no applications).
Please note that we exclusively accept applications submitted through our online application portal. Applications via email or postal services will not be considered.
We would like to point out that the pre-selection is carried out by the responsible recruiters and not by artificial intelligence.
About ETH Zürich
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.