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。