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arXiv · 2510.04789

All-optical nonlinear phase modulation in open semiconductor microcavities

Fedor A. Benimetskiy·Paul M. Walker·Anthony Ellul·Oleksandr Kyriienko·Martina Morassi·Aristide Lemaître·Tommi Isoniemi·Maurice S. Skolnick·Jacqueline Bloch·Sylvain Ravets·Dmitry N. Krizhanovskii
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Abstract

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$\pm$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.

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Fedor A. Benimetskiy, Paul M. Walker, Anthony Ellul, Oleksandr Kyriienko, Martina Morassi, Aristide Lemaître, Tommi Isoniemi, Maurice S. Skolnick, Jacqueline Bloch, Sylvain Ravets, Dmitry N. Krizhanovskii. 2025-10-06. All-optical nonlinear phase modulation in open semiconductor microcavities. https://arxiv.org/abs/2510.04789

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