ISRO Tested Advanced Hack-Proof Quantum Communication Tech

ISRO Tested Advanced Hack-Proof Quantum Communication Tech

Recently, ISRO’s Space Applications Center and Physical Research Laboratory have successfully used quantum entanglement to create a hack-proof communication system.

This is a big step towards satellite based communication. This includes the creation of a channel for quantum-secure text sharing, image transmission, and quantum-assisted two-way video calling. The experiment was conducted between two buildings located 300 meters apart.

About quantum communication:

  • Quantum communication uses the laws of quantum physics to protect data.
  • Quantum physics studies the nature and behavior of energy and matter at the quantum (atomic and subatomic) level.

Thus quantum communication is based on two major principles of quantum physics:

  • Superposition: This means that each quantum bit or Qubit can represent both 1 and 0 at the same time.
  • Quantum entanglement: This means that quantum bits can be interchanged with each other in superposition; i.e. the position of one (whether it is 1 or 0) may depend on the position of the other.

Quantum entanglement is used in cryptography. Here it is used to create a shared secret key for the sender and receiver. Only sender and receiver can use this secret key. They use this key to encode their messages.

When someone intercepts the signal, the entanglement is deactivated. This allows the communication to be hacked.

Source – The Hindu

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