Quantum Physics

Track 7: Quantum cryptography

Quantum cryptography is a type of encryption that makes use of some of quantum physics' inherent qualities to transmit and secure data in a way that cannot be cracked. Encrypting and protecting data using a secret key allows only the person who has it to be able to decrypt it, which is the process of cryptography. In contrast to conventional cryptographic systems, quantum cryptography uses physics, not mathematics, as the primary component of its security paradigm. Quantum cryptography is a system that cannot be broken into without the transmitter or recipient of the message being aware of it. It is therefore impossible to copy or read data encoded in a quantum state without disclosing the act to the sender or recipient. Quantum cryptography ought to be impervious to quantum computer users as well. Data is sent across fibre optic wire using individual light particles, or photons, in quantum cryptography. Binary bits are represented by photons. Quantum physics is a key component of the system's security. These safe areas consist of the following:

• Particles can exist simultaneously in more than one location or state.


• Whole particles cannot be replicated, and a quantum attribute cannot be observed without affecting or upsetting it.