Generating quantum entanglement using quantum dot photon emitters, violating Bell inequality

https://phys.org/news/2024-07-quantum-dot-photon-emitters-violate.html

"Bell inequality tests for quantum entanglement: measured correlations between particles must be <= locality bound of 2... quantum dots + waveguide enables efficiency, coherence, stability control of emitted photons...cooled chip to -269°C minimize unwanted interactions between the quantum dot and phonons in semiconductor... significantly exceeded 2 so violated Bell inequality... 7.2 pW, 1,000X less than traditional single-photon sources... scalable... photonic quantum computing, communication, sensing"

Related: China’s new quantum dot emitter produces ultra-pure photon pairs for quantum networks
https://interestingengineering.com/science/quantum-dot-device-emits-photon-pair