2025/10/06 by Fedor A. Benimetskiy, Benimetskiy, Fedor A., Paul M. Walker +24
Physics and Astronomy · #Mechanical and Optical Resonators #Quantum optics and atomic interactions #Strong Light-Matter Interactions #cond-mat.other #physics.optics
paper · pdf · doi:10.48550/arxiv.2510.04789
openalex publication_date 2025/10/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
We report a significant advancement in ultra low power light-by-light phase modulation using open semiconductor microcavities in the strong light-matter coupling regime. We achieve cross-phase modulation of up to 247±17 mrad per particle between laser beams attenuated to single-photon average intensities. This breakthrough extends the potential for quantum information processing and nonlinear quantum optics in strongly coupled light-matter systems, setting a new benchmark in the field without relying on atom-like emitters. Our findings suggest promising new avenues for scalable quantum optical technologies.