You cannot copy an unknown quantum state due to a fundamental rule of quantum mechanics called the no-cloning theorem. This means quantum states cannot be saved or duplicated during calculations ...

It means that we can't copy the state since it needs to be measured to be able to do that. This principle is known as the no-cloning theorem. In simpler terms, you can't just copy and paste ...

As threats on the internet continue to evolve, traditional cryptographic methods are becoming increasingly ineffective.

QKD relies on the principles of quantum mechanics, such as the no-cloning theorem and the uncertainty principle, to ensure that any attempt to intercept or measure the quantum states during ...