Foreign media: Chinese scientists have made a major breakthrough in quantum optics. The team from the Beijing Institute for Quantum Information Sciences has developed a miniature two-photon emission device, breaking through the efficiency bottleneck.
The device achieves a two-photon purity of 98.3% and a generation efficiency of 29.9% under pulsed excitation conditions, both of which are at the international leading level. Traditional quantum dots have difficulty stably generating two photons, while the new device achieves "the best in the world" performance through innovative design.
This breakthrough is expected to promote the improvement of medical imaging resolution, unbreakable quantum encryption technology, and the development of next-generation sensors, and it holds significant importance in the competition of quantum technologies.
The relevant achievements have been published in the journal "Nature Materials," and have received high praise from German scientists.
Original article: toutiao.com/article/1859106832882759/
Statement: This article represents the views of the author himself.