Nature Physics, Published online: 22 May 2025; doi:10.1038/s41567-025-02886-w
Photon interactions in materials typically create a gaseous bosonic state, which is prone to turbulent behaviour that disrupts coherence. But it is now shown that, using fast-gain processes in a modulated semiconductor laser, light can be stabilized in a liquid-like state, enhancing the coherence of its flow.
