[Postdoc] Semiconductor Rydberg Physics For Quantum Sensors

The Quantum Optoelectronics team at the LPCNO is starting a new experimental activity aimed at exploring exotic states (giant orbitals, called “Rydberg” orbitals) of electron-hole pairs (excitons) in a wide-gap semiconductor 1-2. Rydberg states have remarkable properties such as mesoscopic sizes and long-range giant interactions, which make them prime candidates for solid- state quantum technologies, i.e. realized in a solid structure. We study in particular the possibilities that these states offer for non-linear quantum optics, with a view to developing a new type of quantum sensor.

The team possesses advanced laser systems (UV, Visible, IR) and sophisticated measuring devices, allowing us to probe various states with great precision. We aim to use different light sources to better understand the giant optical nonlinearities stemming from Rydberg physics 3 and to develop novel two-colors optical control schemes in view of developing solid- state quantum sensors.

1 T. Kazimierczuk, et al. "Giant Rydberg excitons in the copper oxide Cu2O." Nature 514.7522 (2014): 343-347.

2 M. Aßmann and M. Bayer. "Semiconductor Rydberg Physics." Advanced Quantum Technologies 3.11 (2020): 1900134.

3 C. Morin, et al. "Self-Kerr Effect across the Yellow Rydberg Series of Excitons in Cu2O." Physical Review Letters 129.13 (2022): 137401.

Standard French social security system, including full healthcare coverage.

12-24 months contract depending on experience.

Email contact, zoom interview, visit.

The candidate should hold a PhD in physics, be highly motivated and be fluent in at least English or French. A specialty in condensed matter and/or a good knowledge on either nonlinear optics or Rydberg physics will be strongly appreciated. Applicants should send a CV accompanied by a cover letter and a reference letter.