In this project you will aim to induce superconductivity by shining light on materials inside an optical cavity. The project leverages the strong coupling between excitons in semiconductors and photons in micro-cavities. This strong coupling results in hybrid light-matter quasi-particles known as polaritons. Recent theoretical works have shown that the coupling between polaritons and electrons in cavity-embedded materials can lead to a superconducting state for electrons. The transition to this superconducting state occurs as a function of the polariton density, which can be controlled with a laser.
Your tasks will include: i) depositing and electrically contacting various materials on mirrors that will be used to make micro-cavities. ii) investigating the optical and electronic transport properties of these materials as they are strongly coupled to cavity modes. You will perform these experiments in the 4-290 K temperature range using a state-of-the-art cryostat designed for experiments demanding extremely high mechanical stability. This is a unique setup enabling independent translations and rotations of two mirrors with sub-nanometer precision, free-space optical excitation and collection, as well as conductivity measurements, all inside a closed-cycle cryostat.
You will be involved in all aspects of the design, realization, and analysis of experiments. Experimentally, you will collaborate with a PhD student working on complementary aspects of strong light-matter coupling in similar systems. Theoretically, you will collaborate closely with leading groups working on aspects of quantum optics and condensed matter physics related to your experiments.
You have (or will get soon) a PhD in Physics or closely-related discipline. The ideal candidate has lab experience in optics and device physics. Candidates with background in only one of the above areas will be considered if they are enthusiastic about getting experience in the other area. This project involves diverse collaborations across materials science, device physics, and quantum optics theory. Therefore, we are looking for a team-player with multidisciplinary interests and abilities.