中国水下“远距传动”取得突破，意味着通过海底的网络连接将牢不可破 [英国媒体]

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In a major breakthrough for quantum teleportation scientists in China have successfully transmitted entangled photons underwater for the first time.

在量子隐形传态通信领域的一项重大突破中，中国科学家首次在水下成功传输了纠缠光子。

Sent down particles of light they can theoretically maintain their lix across any distance and have the potential to revolutionise secure communications.

理论上讲，发送下来的光粒子可以保持其传态，传输到任何距离，并将有潜力彻底改变安全通信。

Chinese scientists have used the technology in recent months to transmit information to satellites over a distance of more than 745 miles (1200 km).

近几个月来，中国科学家已利用这项技术将信息传送到卫星上，距离超过745英里（1200公里）。

The latest technique is the first step in using lasers to send unhackable internet data across the world's oceans. 

最新的技术应用是首次利用激光通过世界各地的海洋传送无法破解的网络数据。

Researchers from Shanghai Jiao Tong University in China proved the concept across a more modest distance of ten feet (three metres) than their satellite wielding peers.

相比于他们研究通过卫星传输的同行，中国的上海交通大学研究人员成功进行了十英尺（三米）距离的实验。

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They did so by collecting samples of saltwater from six sites in the Yellow Sea which they placed in containers to establish whether variations in the water affected their results.

他们就这样从黄海选六个点采集盐水样本，装入容器，以确定水体变化是否对结果有影响。

A beam of light was then shot through a crystal which split it into pairs of photons which are connected at the sub-atomic or quantum level.

然后发射一束光穿过分光晶体，分裂成光子对，连接到亚原子或量子能级器。

This means that the behaviour of the pair of particles is now lixed theoretically over any distance allowing data to be 'teleported' between the two.

这就意味着，理论上讲粒子对的行为现在可以在任何距离上建立传态，允许数据在两者之间“隐形传送”。

However this quantum lix between can be easily disrupted by the surrounding environment particularly water which absorbs light. 

然而这种区间量子纠缠传态很容易受到环境噪声干扰，特别是水又能够吸收光。

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So far it has been successfully demonstrated that quantum entanglement can survive transmission via fibre optic cables the Earth's atmosphere and the vacuum of space.

迄今为止，已经成功证明了量子纠缠可以通过光纤、地球大气层和真空空间传输而得以存活。

But the Chinese team's work suggests that quantum teleportation may also work underwater with data transmitted using the process retaining 98 per cent fidelity. 

但中国团队的工作表明，量子隐形传态同样也可以在水下实现，过程中所使用的传输数据可保持98%的保真度。

Transmitting data via existing underwater methods is faster and cheaper than using satellites.

相比于使用卫星，基于现有的水下方法的通信数据传输更快更便宜。

Writing in the paper its authors said: 'Long-distance quantum channels capable of transferring quantum states faithfully for unconditionally secure quantum communication have been so far confirmed to be feasible in both fibre and free-space air. 

作者在论文中写道：“到目前为止，忠实有效传输量子态的在无条件安全量子通信，已通过光纤和自由空间这两种远距离量子信道被证实都是可行的。“

'However it remains unclear whether seawater which covers more than 70 per cent of the Earth can also be utilised leaving global quantum communication incomplete. 

然而，覆盖了地球70%面积的海洋能否被用作量子信道仍未可知。缺少了海洋，全球量子通信网将是不完整的。








-------------译者：掘地三千丈-审核者：龙腾翻译总管------------

CATTYandCO
I don't see why I need an unhackable internet when I already don't put my credit card details into the hackable one.

我不知道当我已经不把我的信用卡详单放到可被黑客攻击网络里的时候，为什么我还需要一个不会被黑客攻击的网络。

smudger67 -> CATTYandCO
You need to wake up. It isn't just what you input it's what others hold on you information collected by visual hacking (webcams phone cameras ps4 Xbox iPad if it's got a camera and a connection it's hackable etc..) You're their target.

醒醒。并不只是你输入的，而是通过可视黑客技术其他人控制收集你的信息(网络摄像头，电话、相机、ps4 、Xbox，iPad等等，只要有摄像头和连接，就能破解)。你是他们的目标。

electraglide
made in China. sorry not interested in your fantasy.

中国制造。很抱歉对你的幻想不感兴趣

t21stcenturys-_
People always find a way through security no matter how hard you try there will always be somebody who manages to break through the system

不管你怎么努力，人们总能找到办法，总有人能设法突破这个系统

sean bottle
Struggling to grasp this fully. Doers this mean faster than light data communications are possible? So we could one day phone Alpha Centauri and have a conversation? 

很难完全理解这一点。这是否意味着比光数据通信更快是可能的?所以我们终有一天能打电话给半人马座阿尔法星，然后进行对话?

Denis Barre -> sean bottle
No it doesn't unfortunately. Its applications are mainly military: unhackable seure communications.

不，很不幸不能。它的应用主要是军事的：不可破解的安全通信。

-------------译者：掘地三千丈-审核者：龙腾翻译总管------------

Gastonia
Not quite there yet thenare they. When they can communicate with the other side of the universe instantaneously that will be something.

现在还不完全是这样。当他们能与宇宙的另一边即时通讯时，才有意义。

Denis Barre -> Gastonia
The word "instantaneously" has no meaning in a relativistic universe sorry.

“即时”这个词在相对论宇宙中没有意义，抱歉。

Jenny
So what about interference? Also sub-particles are interchangeable at that level. If you are creating a quantum force between two sub-particles and another sub-particle comes along can't it "steal" the transmission?

干扰呢?此外，亚粒子在这一层面上是可互换的。如果你在两个亚粒子之间制造一个量子力而另一个亚粒子来了，它不能“偷走”这次传输?

praise -the-lord
Entanglement violates causality where any particle anywhere in the universe can communicate instantly the Lord continues to baffle and amaze us and make fools out of godless scientists take that! 

纠缠违背了因果关系，宇宙中任何地方任何粒子都能立即交流。上帝继续让我们感到困惑，使我们吃惊，让那些无神的科学家们变成傻瓜!

Denis Barre -> praise -the-lord
The "godless" scientists whe read the mind or your creator.

这些无神的科学家读懂了你的创造者的心思。

 -------------译者：掘地三千丈-审核者：龙腾翻译总管------------

leeds-lad
I can't tell you how thrilled I am about Quantum entanglement. In Leeds we're talking about little else 

我不能告诉你我对量子纠缠有多激动。在利兹，我们很少谈论别的

Jaykay
Quantum entanglement always baffles and amazes me! It shouldn't be possible yet it is.... 

量子纠缠总是让我感到困惑和惊奇!它不应该成为可能，但确实是可能的....

Tony Bush
watch "China Space Walk Was FAKE" made in swimming pool where you see bubbles going up. 

看‘中国太空漫步是假的’，在能看到冒泡的游泳池里做的。

electraglide -> Tony Bush
bubbles in space? only in China.

太空中的气泡？只有中国有。

Uncle Bill
The Chinese are not building these satellites for humanitarian reasons.

中国人不是出于人道主义建造这些卫星的。

ExcuseMe1
Einstein didn't believe in it. Referred to it as "spooky action at a distance" and distance is really no obxt can work from one end of universe to the other. It's fascinating and quite bizarre.

爱因斯坦不相信它。把它称为“远处的幽灵行动”和距离是真实的，没有任何东西可以从宇宙的一端到另一端。这很有趣，也很奇怪。

SAMSUNG GALAXY S8
This is an important technology to ministry of defence of every country. 

这对每一个国家的国防部都是项重要技术。

MannyT
It would be easier to understand if they called it magic.

如果他们称之为魔法，更容易理解。