Quantum Cryptography

Quantum cryptography is a way of encrypting data with naturally occurring properties of quantum mechanics that cannot be hacked.

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Quantum cryptography is how quantum mechanical properties are used to perform cryptographic tasks. In general, these tasks would be impossible or infeasible with classical (non-quantum) systems. Quantum mechanics is the science of the very small. It explains how matter and energy behave at the scale of atoms and subatomic particles.

Quantum cryptography relies on two principles:

• If two photons are created at exactly the same moment in time and space, they will remain perfectly identical for all time, even if separated by great distances.
• Quantum physics prohibits eavesdropping on a message without being detected.

Light As Energy

Quantum Key Distribution

The best known example of quantum cryptography is quantum key distribution, which exchanges encryption keys for secure communications between shared parties…