www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

Global EditionASIA 中文雙語Fran?ais
China
Home / China / Innovation

China's nano 'two-photon factory' sets world record

Xinhua | Updated: 2025-07-21 21:47
Share
Share - WeChat
A Chinese research team has achieved a world-leading breakthrough in quantum technology by developing an entangled light source with near-perfect fidelity. [Photo/cctv.com]

GUANGZHOU -- A Chinese research team has achieved a world-leading breakthrough in quantum technology by developing an entangled light source with near-perfect fidelity, according to Sun Yat-sen University in South China's Guangzhou.

The research, published online in Nature, was led by Wang Xuehua and Liu Jin, two professors from the university's School of Physics.

It will provide critical support for the development of next-generation quantum precision measurement technologies and the construction of functional photonic quantum information processing chips, Wang said.

The theoretical prediction of spontaneous two-photon emission dates back to the 1960s. However, the generation probability of these "twin" photons was typically far lower than that of single photons, making experimental observation nearly impossible.

Despite numerous experimental attempts by international research teams over the past four decades, the field has seen no substantive breakthroughs.

Recent breakthroughs in semiconductor material growth and device processing techniques have provided essential support for experimentally realizing this phenomenon.

"We designed an ultrahigh-quality optical microcavity and precisely controlled the photon generation process at the micro-nano scale," said Liu Shunfa, the paper's first author and an associate professor at Sun Yat-sen University.

This microcavity creates a dedicated pathway for generating the "twin" photons, boosting the two-photon radiation efficiency from less than 0.1 percent to approximately 50 percent in experiments. The breakthrough makes the preparation of a controllable, triggered entangled photon-pair source feasible, Liu said.

"We've essentially built a dedicated 'photon factory' on the nanoscale for producing entangled photons," Liu explained.

The research, based on a nano-sized solid-state "artificial atom" structure, introduced the cavity-induced spontaneous two-photon emission scheme.

It pioneered the achievement of spontaneous two-photon radiation intensity matching single-photon levels and successfully produced the novel on-demand triggered entangled photon-pair source with 99.4 percent fidelity.

"The results indicate an extremely high degree of 'psychic connection' between our entangled photons, and demonstrates the great potential of this technology for enhancing quantum communication security, quantum computing reliability, and quantum metrology precision," Liu said.

Reviewers at Nature highly praised the work, calling it a groundbreaking advance in the field of two-photon research and noting that it achieves entangled photon pairs with record-high fidelity.

Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 一级一级毛片看看 | 欧美激情 自拍 | 国产女乱淫真高清免费视频 | 久久国产精品女 | 色老头老太做爰视频在线观看 | 日韩国产精品99久久久久久 | 一区二区成人国产精品 | 日本韩经典三级在线播放 | 久久久久久久99久久久毒国产 | 高清毛片免费看 | 中文字幕在亚洲第一在线 | 欧美不卡在线视频 | 亚洲午夜精品久久久久久抢 | 国产午夜亚洲精品 | 真实国产乱人伦在线视频播放 | 久草视频在线免费 | 亚洲最大免费视频网 | 亚洲精品一区二区在线观看 | 新26uuu在线亚洲欧美 | 国产综合13p | 亚洲成在线 | 91精品成人 | 久久久久久久网站 | 国产成人精品久久一区二区小说 | 久久香蕉国产线看观看亚洲片 | 国产精品亚洲欧美日韩久久 | 国产精品伦理久久久久 | 精品国产一区二区三区www | 国产成人av性色在线影院 | 午夜一级做a爰片久久毛片 午夜伊人网 | 国产欧美一区二区精品久久久 | 亚洲一区免费观看 | 国内精品久久久久久久久蜜桃 | 高清欧美性xxxx成熟 | 另类毛片 | 极品美女写真菠萝蜜视频 | 国产人成在线视频 | 国产欧美网站 | 久草草视频在线观看免费高清 | 成年女人毛片免费观看97 | 亚洲精品m在线观看 |