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Quantum Communication

Quantum Communication

Introduction: Quantum communication is a field of applied quantum physics closely related to quantum information processing and quantum teleportation. Quantum communication boasts ultra-high security communication. It uses subatomic particles to securely communicate between two points. These subatomic particles are mainly quantum entanglement of photons. It ensures that nobody taps into the line as a photon can be neither separated nor duplicated. 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. Thus tapping the network will inevitably corrupt the signal. It has the ability to inform the two communicating users of the presence of any third party trying to eavesdrop. At the same time, the information being intercepted will self-destruct. It holds enormous prospects in the field of defense Worlds first quantum satellite: China had successfully launched the worlds first quantum satellite in August, 2016, dubbed as Quantum Experiments at Space Scaler (QUESS) satellite. It was nicknamed as Micius after a 5th century BC Chinese philosopher and scientist. The worlds longest super-secure quantum communication line connecting Hefei, capital of Anhui province to Shanghai, the countrys financial hub. It boasts of ultra-high security making it impossible to wiretap, intercept or crack the information transmitted through them. Features: The super-secure quantum communication line is 712-km in length. It has 11 stations and it took three years of construction. It will be located in sun-synchronous orbit at an altitude of 500 km and will circle the Earth once every 90 minutes. In one of its first test communication, it had transmitted a secure video conference between the two cities. It will be backbone highly secured communication network to be used in the fields of finance, electronics and government affairs. Applications: It will enable the space-to-Earth highly secure hack-proof quantum communication network. The satellite will help China to establish hack-proof communications system by transmitting uncrackable keys from space to the ground. Ranges from highly secured military and government communications to online shopping. Significance: This will enable the space-to-Earth quantum communication network. This is 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. Earlier, researchers around the world had successfully sent quantum messages on land.

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