Physicists entangle more than a dozen photons efficiently

 https://phys.org/news/2022-08-physicists-entangle-dozen-photons-efficiently.htm

"allows any number of entangled photons to be generated... By measuring the photon chain produced, we were able to prove an efficiency of almost 50%, says Philip Thomas. This means almost every second push of a button" on the rubidium atom delivered a usable light particle—far more than has been achieved in previous experiments. All in all, our work removes a long-standing obstacle on the path to scalable, measurement-based quantum computing"

Related: Researchers take a different approach with measurement-based quantum computing
https://phys.org/news/2023-12-approach-measurement-based-quantum.html