Speaker
Description
Quantum optics with Rydberg atoms and superconducting resonators is well-established, with attention now towards interfaces with on-chip quantum computing devices [1,2]. We are developing a similar platform using Rydberg excitons – bound states of excitons and holes in a semiconductor. We have measured the largest microwave-optical Kerr coefficient to date [3], and our experiments are able to reach the ultra-strong driving limit where the coupling strength exceeds the splitting between between nearby Rydberg states [4]. These results are in near-quantitative agreement with an atomic-physics inspired theoretical models [3,4]. Rydberg excitons may also exhibit optical strong coupling [5], and I will describe our progress towards a hybrid quantum system of Rydberg excitons strongly coupled to on-chip optical and microwave resonators at T<300 mK.
[1] A. A. Morgan and S. Hogan, Phys. Rev. Lett. 124, 193604 (2020)
[2] M. Kaiser et al., Phys. Rev. Res. 4, 013207 (2022)
[3] J. D. Pritchett et al. APL Photonics 9, 031303 (2024)
[4] A. Brewin et al., New J. Phys. 26, 113018
[5] K. Orfanakis et al., Nature Materials 21, 767 (2022).
