中国在城市间建立起了“牢不可破”的量子信号 [美国媒体]

-------------译者：加勒比海神-审核者：xczx_123------------



The field of quantum cryptography which seeks to transmit encrypted information using entangled quantum particles like photons could help lay the groundwork for tomorrow's quantum networks but it faces a significant physical hurdle: entangled photons are crazy hard to transmit long distances. Even in fiber optic cables they can only go about 150 miles before completely degrading. But a team of researchers from the Chinese Academy of Sciences may have the solution. You just have to send the photons 745 miles into space.

量子密码学领域寻求使用纠缠的量子粒子诸如光量子来传输加密信息，这将为未来的量子网络打下基础，但是它却面临着重大物理障碍：纠缠的光量子很难远距离传输。即使是在光缆中，在它们完全衰减之前也仅仅可以传输150英里。但是来自中科院的一组研究人员或许有了办法。你只需要将光量子往太空中传输745英里。

Though the idea of using satellite relays to shunt entangled photons into space and back has long been considered it wasn't until last August that the nation sent up its first such orbiter the $100 million Quantum Experiments at Space Scale. It is reportedly equipped with a laser-and-mirror system as well as a special crystal that can encode data and encryption keys onto photons as they travel back to Earth.

尽管使用卫星中继器将纠缠的光量子在太空中传接这个想法已经被考虑了很久，但是直到最近中国才发射了它的第一颗价值一亿美元的量子试验卫星。据报道，它配备了一个激光和镜像系统，以及一种特殊晶体，可以在光量子返回地球时编码数据和加密秘钥。

-------------译者：创新-审核者：龙腾翻译总管------------

Even without the ground-based obstacles that conventional quantum networks and experiments have to contend with spotting these photons on their way back from orbit is no easy feat. The crystal can generate as many as 6 million pairs of photons at any given time however the two designated ground stations which are located 750 miles apart are only able to detect around one par per second. "It's a challenging task" physicist Chao-Yang Lu told Wired. "It's like you have to clearly see a human hair from 300 meters away."

虽然没有传统量子网络和实验需要应对的地面障碍物，但是想要发现这些从太空中发回的光量子还是非常具有挑战性的。晶体在任何时候都可以产生6百万对光子，然而选定相距750英里（1207千米）的两个地面站每秒只能检测大概一对。“这是个挑战性的任务。”物理学家陆朝阳告诉《连线》杂志。"好比你要从300米外看清一根头发。"

Lu and his team hope that this successful experiment which has recently been published in the Journal Science (paywall) could pave the way for more secure encryption systems. In theory you'd first encode an encryption key based on the characteristics of a photon stream and send that to your message's recipient. You'd then encrypt your message with that key and send it on as well.

陆和他的团队这个最近发表在《科学》杂志（网上付费专区）的成功实验能为更多的安全加密系统铺平道路。理论上，根据光子流特性你先编码加密密钥然后发送密钥给你的信息的接收者。然后你也用那个密匙加密你的消息然后发送出去。


-------------译者：ygytnt1001-审核者：龙腾翻译总管------------

S M G
In USA all we know is Chinese steal and only steal because media wants you believe that way.

在美国我们就知道中国只会剽窃，这都是媒体干的好事。

MM
Everyone knows that. All but Americans. Please realize the rank only 43rd with their freedom of press globally. Most 3rd world countries have better freedom. US is hardly a credible nation anymore. No evidence of Chinese spies ... Meanwhile we all know Snowden is American. Active US Admiral convicted of spying wasn't Chinese. Nor were 9 other high ranking officers selling information. US Ford plans stolen? US naval engineer. All ASW technology? US scientist. List goes on.

这是众所周知的事情。都是美国人自己干的。美国的言论自由排名世界43位，大部分第三世界国家在这方面都比美国强，美国真的不再是一个可靠的国家了。没有任何证据证明中国有间谍行为...与此同时我们都知道美国出了个斯诺登。被判间谍罪的在役美军上将也不是中国人。另外9名出卖情报的高官也不是中国人。美国福特号航母计划被盗？美国海军工程师泄露。所有的反潜技术？美国工程师泄露。不一而足。

Brad
Yeah their pretty smart I worked on chem E project with them. Their concepts on nanotechnology is very impressive. Still this tech has another 15-20 yrs of R&D and small scale implementation before it's even ready for real world trials. Who knows maybe sooner the Chinese are very disciplined.

是的，我之前在chem E计划中共事的中国人都非常聪明。他们对纳米技术的造诣令人印象深刻。尽管这些技术面试还要花上15-20年的研发时间和一些小规模实验。也许也用不了那么久，中国人非常效率的。

-------------译者：ygytnt1001-审核者：龙腾翻译总管------------

R u serious - NY
The American narrative has been one of the blind self assured that American exceptionalism is born into and we don't have to do anything to earn it or keep it. For decades we assured ourselves that no other economy can compete against ours. Then China rose. But then we said we were still the financial center of the world. Our stock markets sets the tone on the global market. Until that was no longer true. Then we said China copies everything and is incapable of inventing new ideas. I hope this is the loud wake-up call akin to Sputnik that we cannot expect America to be made great by sitting on the couch. We need to refocus from blowing all our money on never-ending conflicts and instead on our infrastructure and education to create success for the future before everyone else has raced past us. Other countries don't need to re-invent everything we did. They can simply start pursuing the latest tech with the existing current tech. Basically the path to surpassing a technological power is shorter than most people even realize.

美国的说法向来是盲目自我的，即美国的例外主义是与生俱来的，我们不用付出任何努力就可以得到的。几十年来我们都自我安慰说没有其他国家可以和我们竞争，现在中国崛起了。但是我们仍坚称自己是世界金融的中心，我们的股票市场是全球市场的风向标。直到这些再也不好使了，然后我们就说中国人只能抄袭一切，什么也发明不了。我希望这就像前苏联的伴侣号一样振聋发聩，因为我们不可能干坐在沙发上就让美国变得再次伟大。我们必须在其他人超过我们之前停止把钱用在永无休止的斗争中，而是要用在我们的基础设施和教育上，创造美好的未来。其他国家不用重新发明我们已经发明的东西，他们可以简单的购买现有的最新科技。说实话对一个科技强国的超车之路是一般人都想不到的短。

-------------译者：bauer-审核者：龙腾翻译总管------------

George Politico
I hope that we do this but the foreign policy / defense establishment that wants continual conflict is powerful. You're right though--we have military bases all around the world but if we lose our technological edge they won't do us much good. The host countries will realize that they are a liability and tell us to leave.

我希望我们做这个，但想要持续冲突的外交政策/国防机构很强大。但你是正确的--我们在世界各地有军事基地，但如果我们失去了技术上的优势，那些基地也并不能带给我们多少好处。基地所在国将认识到那些基地是负资产而让我们离开。

Uncle
Einstein called this 'spooky action at a distance.' Spooky is right. Information can theoretically be transmitted at faster than light speeds between entangled particles which is insane but true...

爱因斯坦曾把这个叫做“鬼魅般的超距作用。”确实是吓人的。信息能够在纠缠的量子间以超光速传递。这很疯狂，但确是真实的。

incutool
Zach: Quantum entanglement is instantaneous. Particles are not traveling. They share the same manipulation instantly no matter which on particle was manipulated

Zach：量子纠缠是即时的。粒子并不需要被传递。不管哪个量子被操纵，相同的操纵会即时的反映在（纠缠的）量子上。

 -------------译者：bauer-审核者：天河云------------

Uncle
Read it for yourself. Quantum entanglement can send information faster than the speed of light and no one knows how it works--it just does.
http://newatlas.com/quantum-entanglement-speed-10000-faster-light/26587/

自己读一读吧。量子纠缠可以超光速传递信息而且没有人知道其原理--但它就是可以。

zach
It can't be transmitted faster than light because the particles have to be sent to their locations first. That's like saying a car that drives 500 miles to a destination and then unloads its passengers 3 hours after arriving delivered its passengers faster than light.

它不可能以超光速传递信息，因为得先把粒子传到目的地。这就像说一辆车开500英里到一个地方，然后3小时候后抵达目的地，就说这辆车以超光速运送乘客。

BiggerCat_77
Yup and this is why reality is not what we think it is.

是的，这就是为什么现实不是我们想象的样子的原因。

Blah
Big Deal! U.S. bounces an "Orange Clown" between D.C. and Palm Beach Florida weekly.

有什么了不起！ 美国在华盛顿和佛罗里达的 Palm Beach 间每周都来回运送一个“橘色小丑”（特朗普）

-------------译者：龙腾翻译总管-审核者：龙腾翻译总管------------

Bill

清单

And the Clown sends out messages the are so incomprehensible the must be encrypted by a 5 year old

而这个小丑所发出的信息让人难以理解，肯定是5岁孩子加密过的。

George Politico

政客乔治

We are losing our technological edge. One mistake we should not make is to abandon renewable energy and allow foreign competitors (especially China) to dominate the market. Whether global warming is real or not the world is heavily committed to renewable energy and we should make our plans accordingly

我们正失去技术优势。我们放弃了可再生能源，这是一个错误，导致外国竞争者尤其是中国主宰了这个市场。不管全球变暖是不是真的，全世界都在发展可再生能源，而我们也应该制定相应的计划。

tech

技术

Meanwhile in the good ole US of A: 30 something % of the populace doesn't believe in climate change and thinks vaccines cause autism. Smh we can't even scientifically keep up with third world countries anymore let alone expand the cutting edge of science space or technology. Oh well empires rise and then they fall I suppose...

而在美国有30%的人们不相信气候变化，还认为是疫苗引起了孤独症。哎，我们在技术上都赶不上第三世界国家，更别提扩大科学空间和技术方面的优势了。我想这应该就是所谓的帝国的升起与衰落吧。

-------------译者：cyber power-审核者：天河云------------

FalseProfit
Quick move to Canada snowflake.

你们这些脆弱的人，赶紧移民去加拿大吧。

justin
We need to be doing stuff like this in fact we should be pioneering these fields we used to be inovaters if we stay on the road we're headed down we just be the imitators just in

此类东西是我们所需要做的，事实上我们应该开拓这些领域，一个曾经的创新者，如果老是呆在原地或者走下坡路，哪我们顶多算是个模仿者。

 michacos
Soon the US will be a copycat and steal China's Quantum technology.

不久，美国将窃取或山寨中国的量子技术。