In recent years, our country has sent up the world's first quantum satellite, and Chang'e-4 has made a soft landing on the moon.

近年来，我国发射了世界上第一颗量子卫星，嫦娥四号实现了月球软着陆。

Under his leadership, the world's first quantum satellite was launched successfully in August 2016.

在他的领导下，世界上第一颗量子通讯卫星于2016年8月被成功发射。

Pan Jianwei, who launched the first quantum satellite in August last year.

就是去年8月将首颗量子卫星发射升空的潘建伟。

Each satellite contains four "atomic clocks", which vibrate at a precise frequency, according to the laws of the quantum theory.

每一个颗卫星上都装有四个“原子钟”，它们根据量子理论法则，以精确的频率振动。

China has launched the first satellite using quantum technology to send communications back to earth. Quantum technology will make these communications safe from hackers.

中国发射了首颗采用量子技术向地球发回信息的卫星。量子技术将使得这些通信远离黑客威胁。

The Chinese researchers hope to use the satellite and quantum communications to establish secure transmissions between two ground sites.

中国的研究人员希望利用这颗卫星和量子通信，在地面上的两个地点之间建立安全的信息传输。

So, if the satellite were to encode an encryption key in that quantum state, any interception would be obvious. It would also change the key, making it useless.

因此，如果卫星在量子状态下编写了加密密钥，任何截取行为都会被发现。密钥就会随之发生变化，从而失效。

But a quantum communication satellite USES a crystal that produces a pair of entangled photons whose properties remain entwined even as one is transmitted over a large distance.

量子通信卫星用的则是一种结晶体，这种晶体会产生一对相互纠缠的光子。即便将其中一个传输到很远之外，它们的属性依然会纠缠在一起。

Researchers hope to use the satellite to beam communications from space to earth with quantum technology, which employs photons, or particles of light.

研究人员希望，通过量子技术，用这颗卫星将信息从太空传输到地球。量子技术会用到光子，也就是光的微粒。

So, , if the satellite were to encode an encryption key in that quantum state, any interception would be obvious.

因此，如果这颗卫星要在量子态中加密秘钥的话，任何拦截都是显而易见无意义的。

Each satellite contains four "atomic clocks," which vibrate at a precise frequency, according to the laws of the quantum theory.

每颗卫星都装有4个“原子钟”，它们根据量子理论法则，以精确的频率振动。