Quantum Communication

Quantum communication refers to an almost hackproof communication with use of quantum cryptography. The most common application of quantum cryptography is Quantum Key Distribution (QKD in which the quantum mechanical effects are used to perform cryptographic tasks. Quantum communication boasts ultra-high security communication and uses subatomic particles to securely communicate between two points. In case intruder (hacker) tries to crack the message in Quantum communication, it will change its form in a way that would alert the sender and cause the message to be altered or deleted.

In August 2016, China had launched world’s first quantum communication satellite called Quantum Experiments at Space Scaler (QUESS) or Micius {after the name of a 5th century Chinese Philosopher}. The objective of this launch is to establish hack-proof communications system by transmitting uncrackable keys from space to the ground.

Earlier, researchers had successfully sent quantum messages on land. But this first of its kind satellite-based quantum network would make it possible to send quickly encrypted (hack proof) messages around the world. It also opens door to other possible uses of the technology. The launch is also a major triumph for China in the field of quantum technology.

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