Postdoctoral researcher in Radio-frequency circuit design

The Optical Nanomaterial Group in the Physics Department at ETH Zurich is looking for a Postdoctoral researcher.

Quantum technologies promise to revolutionize multiple branches of science by solving problems that cannot be tackled by classical systems. While efficient and large-scale quantum computers are still far from being commercialized, quantum communication technologies are a reality already present on the market. The use of quantum states to share ultra-secure information is the only proven approach to achieve true communication privacy. However, un-conditional security requires the use of entanglement to establish non-classical correlations between communicating nodes, thus robust quantum networks and a future quantum internet. Commercial solutions avoid entanglement-based methods due to technical challenges, yet this limits the impact such technologies can have. In this project, we aim at further developing photonic integrated circuits for quantum communication, already demonstrated by our group, to address these performance limitations and realize integrated quantum transmitter and receiver of time-bin entangled photonic qubits. To do this, the lithium niobate on insulator (LNOI) platform holds a clear advantage over other integrated optics platforms as its high second order nonlinearity allows for efficient entangled qubits generation and high-speed signal modulation.

The project aims to develop quantum communication units on the LNOI platform, including qubit generation, transmission, measurement and drivers as a first prototype of entanglement-based high-speed photonic integrated circuits for quantum communication and networking. This includes developing high-speed electronic to drive the circuits, read and process data. The advertised position revolves around design and test of custom radio-frequency electronic circuits based on field-programmable gate arrays (FPGA, up to 20GHz) to drive high-speed electro-optic modulators, quasi-static thermo-optic qubit phase tuning, as well as process the transmitted quantum information in real time. 

• 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
• We are actively committed to a sustainable and climate-neutral university
• 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