在线国产一区二区_成人黄色片在线观看_国产成人免费_日韩精品免费在线视频_亚洲精品美女久久_欧美一级免费在线观看

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: 一区二区三区在线播放 | 国产91在线播放精品91 | 欧美影视一区二区 | 欧美一级黄色影院 | 国产高清不卡一区 | 视频在线观看一区 | 日韩在线看片 | 国产一区二区三区在线免费观看 | 日韩和的一区二区 | 国产99久| 黄色欧美一级片 | 欧美乱轮 | 亚洲视频在线观看一区二区三区 | 日韩h在线观看 | 久久精品com | 欧美一级做性受免费大片免费 | 国产不卡视频在线观看 | 波多野结衣 一区二区三区 国产在线中文字幕 | 91精品综合久久久久久五月天 | 成人自拍偷拍 | 国产黄色一级片 | 精品久久久久一区二区国产 | 日韩精品在线观看一区 | 国产一区二区三区久久久久久久 | 久久艹国产视频 | 久久女人 | 一区二区亚洲视频 | 黄色高清视频 | 亚洲一区二区在线免费观看 | 精品一二区| 欧美日韩亚洲国产综合 | 色视频一区二区三区 | 99精品在线免费 | 啪一啪操一操 | 国产亚洲一区二区精品 | 羞羞网站在线观看 | 久久888 | 国产成人精品无人区一区 | 欧美久久综合 | 高清有码 | 国产精品无码专区在线观看 |