中国将发射量子间谍卫星：安全的通信网络 [英国媒体]

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Scientists in China are set to launch the world’s first ‘quantum satellite’ which could one day make for an ultra-secure global communications network.

中国的科学家将发射世界上第一颗“量子卫星”，这会在未来的某一天，建立一个绝对安全的全球通信网络。

The 1300 pound craft contains a crystal that produces pairs of entangled photons which will be fired to ground stations in China and Austria to form a ‘secret key.’

这个重量在1300磅的精密装置包含一块水晶体，可以制造一对处于纠缠态的光子，然后分别发射到位于中国和奥地利的地面接收站，并形成一个秘钥。

Entangled photons theoretically maintain their lix across any distance and according to the scientists any attempts to breach this type of communication would be easily detectable.

在理论上，处于纠缠态的光量子，可以无视任何距离而产生信息交换。据科学家宣称，任何破坏这种通讯的企图都很容易被检测到。

The satellite is set to launch from Jiuquan Satellite launch Center later this month and if initial experiments in this two-year mission prove successful it could soon be followed by a fleet of others according to Nature.

在本月晚一些的时候，这个卫星将在酒泉发射中心被发射。据《自然》报道，如果这项为期两年的任务在初期实验阶段被证明是成功的，那么将很快有另一支团队跟进。

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The researchers are working to prove that particles can remain entangled across great distances – in this case nearly 750 miles.

研究人员正在努力证明，粒子可以在很远的距离仍然纠缠 - 在近750英里的情况下。

Earlier efforts to demonstrate quantum communication have shown this can be up to just over 180 miles and scientists now hoping that transmitting the photons through space will push this even farther.

早些时候通过努力证明量子通信的范围可以超过180英里现在科学家们希望在太空中发射光子会比这个更远。

When travelling through air and optical fibres protons get scattered or absorbed Nature explains posing challenges to the preservation of the fragile quantum state.

在通过空气和光纤粒子在散失或吸收，《自然》杂志解释说，这对脆弱量子状态的保持形成了挑战。

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But photons can travel more smoothly through space.

但是光子可以更顺畅的在太空中旅行。

Achieving quantum communication at such distances would enable the creation of secure worldwide communications networks allowing two parties to communicate using a shared encryption key.

一旦在这样的距离上实现量子通信，将有助于建立一个安全的全球通信网络。它将允许通信的两方使用一个共享的秘钥。

In quantum physics entangled particles remain connected so that actions performed by one affects the behaviour of the other even if they are separated by huge distances. 

在量子力学中，处于纠缠态的粒子保持一种奇特的联系，即使他们相距遥远的距离，其中一个粒子的行为也会立刻影响到其他粒子的状态。

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So if someone were to attempt to listen in on one end the disruption would be detectable on the other. 

所以，如果有人试图在通信中断前对其中一端进行监听，另一端将会立刻发觉。

Over the course of the two-year mission the researchers in China will conduct a Bell test to prove the existence of entanglement at such a great distance.

在这为期两年的任务过程中，中国的研究员将进行一个贝尔测试，来证明在如此遥远距离的条件下，量子纠缠状态依然存在。

And they will attempt to ‘teleport’ quantum states according to Nature meaning the quantum state of the photo will be rebuilt in a new location.

据《自然》报道，他们将会尝试“传送“量子态，这意味着，光子在一种量子态下将会被重置到一个新的量子态。

Researchers from Canada Japan Italy and Singapore have also revealed plans to conduct quantum experiments in space including one proposed aboard the International Space Station.

加拿大、日本、意大利以及新加坡的研究者们也曾透露，计划在太空中进行量子通信实验，其中包括一项在国际空间站中展开的试验计划。


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Eric7286 Hollis United States 2 hours ago
License plates on Jupiter?!? That sounds like a sign of life! How exciting!!!

木星上的车牌照？！这意味着生命迹象！真刺激！！！

BamBamBam New York United States 2 hours ago
Could it beam me an order from Panda Express?

他能把我的熊猫快递订单进行光传送吗？

MuadDib Anywhere on Arrakis United Kingdom 2 hours ago
Someone please help me with the ending part of this story! Is it me not understanding it or is it as per usual missing the detail?! I understand the entanglement part the use for fast and secure communications and instantaneous change of the photon's spin over great distances etc. Fine. There's suddenly a leap to rendering pictures from the surface of Jupiter. Where will the hardware or means to do this actually be? The article seems to go from points 1 to 3. What happened to the transition; point 2? Thanks

有谁能帮帮我把这个故事讲完吗？是我理解能力差还是这篇文章又像往常一样丢失了一些重要的内容？
我懂纠缠理论的那一部分，就是又快又安全的通信手段，光子自旋在远距离改变如何如何，等等等等。
怎么插图突然就是木星表面了呢？哪里说要去木星了？这篇文章似乎从第一节跳到了第三节，怎么回事啊，第二节呢？
谢谢。

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MuadDib Anywhere on Arrakis United Kingdom 38 minutes ago
I've come back to this article with a fresh head! Is it trying to say one day China intends to have a satellite orbiting Jupiter (for instance) capable of taking high-res images of the surface 'somehow' using entangled photons between Earth and the satellite to enable an instantaneous and secure transmission of the data? But then that doesn't take account of the article referring to a 'megascope the size of Earth' which would suggest looking deep into the universe and thus farther back in time? I'm still confused!

我开了一个新脑洞，又回到这篇文章。
这是否是说，有那么一天，中国打算向木星的轨道发射一颗卫星，然后在地球和卫星之间以某种基于量子纠缠效应的技术即时地安全地传输高分辨率的地形扫描图数据？
但是，那么，为什么这篇文章没有考虑到用这个“地球显微幻灯机”装置来观察更深远、更久远的宇宙？
我还是很迷糊……

Henri Walker werwerwe United States 3 hours ago
another fake satellite

另一个假货，人造卫星

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Sgt.Connor Desperation Nevada United States 3 hours ago
Spooky things happening at a distance?

幽灵般的超距作用？

Sgt.Connor Desperation Nevada United States 3 hours ago
Bet its not missile proof.

我猜它不能防御导弹？

Dakota Detroiter Dickinson United States 4 hours ago
Give me a break! Ridiculous article!

得了吧你，可笑的文章！

Jemima Orlando United Kingdom 4 hours ago
Science to hard for you? Quantum entanglement is real and has been observed. Just because you don't understand something doesn't make it any less real.

你是科盲吗？
量子纠缠是真实存在的，已经被观察到了。你不知道，不代表它不是事实。

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JBUSA Riverton United States 4 hours ago
I have been mentioning this for years as an excellent focus for research dollars. The theory has been around as the article mentions for decades. My thought was to have one particle remain on earth and the other in a space craft traveling at near the speed of light and we would be able to communicate not just over space butTIME!

这几年，我一直说，这是值得花研究经费的一个潜力股。这篇文章涉及到的理论被提出有几十年了。
我的想法是这样的，一个粒子呆在地球上，另一个与之纠缠的粒子呆在一艘亚光速行驶的宇宙飞船上，这样我们不仅可以超越空间进行通信，甚至是超越时间！

stewski Doncaster United Kingdom 4 hours ago
It sounds an easy way to disrupt an opponents communicationsyou listen in the entanglement is broken and they know you're listening.A) do they proceed not knowing whether you.ve broken their code or not.Or B) halt the communication and thus stop the information being transmitted.The uncertainty principle is hard to get around even for quantum entanglement.

看上去，有一个简单的方法来破坏敌人的通信。
你监听他们，纠缠被破坏，他们知道你正在监听。
有两种情况：
1、他们继续通信，不确定你是否已经破译密码了
2、他们切断联系，停止通信
即使是量子纠缠效应，也无法否定不确定性原理！

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Quantumsorcerer Davis United States 5 hours ago
This is just a lab experiment. At this point they can't Do anything. They want to see if the concept might work. It would take decades to reach the point talked about here.

这只是实验室的一个实验而已。
在当前条件下，他们什么都做不了。他们想看看这个假想是否可以奏效。
文章里讨论的技术节点，还要几十年才能达到。

tornadobelt Kansas United States 5 hours ago
Well I just sent off a WiFi messages to my friend the King of Jupiter to warn them to encrypt their license plates.

好吧，我刚刚给我的木星之王朋友发了一个消息，警告他加密自己的车牌号。

expat welshman Richmond Canada 5 hours ago
If it did spot a licence plate on a Jupiter moon now that would be news.

如果真的在木星的卫星上发现了一个车牌照，那简直TM的搞了个大新闻。

rogermanpistol2 boston United States 6 hours ago
the world is building great things and america is worried about bathroom rights.. this should be headline

（其他的）世界正在建造伟大的东西而美国在操心浴室权利……这才应该是头条新闻。

ZARDOZ Vortex United Kingdom 5 hours ago
America isn't worried about bathroom rights that;'s just a distraction story for us cattle.

其实美国没有为浴室权利而操心……那不过是为了转移我们这些无价值之人的注意力罢了。