日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Innovation

First quantum satellite surpasses expectations

By CHENG YINGQI | China Daily | Updated: 2017-01-19 07:45

First quantum satellite surpasses expectations

Diagram of Micius, the world's first quantum satellite CHINA DAILY


Five space exploration projects to begin during 13th Five-Year Plan

Micius, the world's first quantum satellite, has successfully completed four months of in-orbit tests since China launched it on Aug 16, the Chinese Academy of Sciences has announced.

"The overall performance has been much better than we expected, which will allow us to conduct all our planned experiments using the satellite ahead of schedule and even add some extra ones," Pan Jianwei, chief scientist for the satellite project, said at a ceremony on Wednesday.

The major goal is to test the possibilities of relaying quantum "keys" carried by photons, or light particles, over 500 to 1,200 kilometers from a satellite to ground stations to create a new kind of information transmission network that cannot be hacked without detection.

A similar, but smaller-scale, network has been tested and put into commercial use in recent years on metropolitan and intercity networks in China, but satellite-ground quantum communication is believed to be key to expanding a quantum network's coverage worldwide.

Other missions include quantum teleportation and quantum entanglement, both for the first time in space.

"Initial tests on the satellite have reached a transmission rate that will allow us to finish these experiments within several weeks, so we will have time to add new experiments," Pan said.

He said the plans include more complex quantum tests between Micius and five ground stations across China this year, and then cross-continental quantum communication experiments to establish links with ground stations in Austria, Italy and Canada in 2018.

"Many key technologies we developed for the Micius satellite have never been used or tested, so in our original plan, it would have been a full success if we were able to build the satellite-ground connection. We did not expect the signal would be so strong, and the transmission rate so high," Pan said.

Micius is part of the academy's Strategic Priority Program, which has sent three satellites into space since December 2015.

Late last year, the academy published a proposal for five new space exploration projects to be started during the 13th Five-Year Plan (2016-20).

"The academy's Strategic Priority Program gives scientists a new stage to build a stronger international reputation," said Xiang Libin, vice-president of the Chinese Academy of Sciences. "I just received an email from a famous French scientist who wished to cooperate with us on the new space exploration projects. Without the reputation we have built gradually through the Strategic Priority Program, we would not have attracted such attention."

 

Editor's picks
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: 午夜电影合集 | 总攻调教各种受肉 | 久久国产区| 日韩中文一区 | 日本黄色网址免费 | 亚洲成人av在线 | 成人精品视频 | 成人高清在线视频 | 青青草免费国产线观720 | 特级毛片8级毛片免费观看 亚洲精品不卡 | 国产视频在线免费观看 | 日本黄色免费片 | 亚洲一区国产 | 成在线人视频免费视频 | 免费的黄网站男人的天堂 | 边摸边吃奶边做激情叫床 | 国产精品久久久免费视频 | 男人的午夜天堂 | 午夜在线免费观看视频 | 黑人插插 | 偷偷狠狠的日日高清完整视频 | 成人国产精品视频 | 国产免费福利网站 | 婷婷色爱区综合五月激情韩国 | 一区二区三区在线观看视频 | 国产一区二区欧美 | 欧美a在线 | 成人精品鲁一区一区二区 | 久久大综合 | 精品国产一区二区 | a毛片久久免费观看 | 亚洲精品乱码久久久久久久久久 | 亚洲视频一区在线观看 | 黄色草逼视频 | 国产淫视 | 国产精品久久久久久无遮挡 | 亚洲精视频 | 亚洲成人第一页 | 国产一区二区免费 | 日本午夜在线观看 | 欧美a∨一区二区三区久久黄 |