MarketsandMarkets defines quantum cryptography as a field of cryptography that uses quantum mechanics principles to secure communications. Unlike classical cryptography, which relies on mathematical techniques to encrypt and decrypt messages, quantum cryptography uses the principles of quantum physics to create unbreakable codes. Quantum cryptography is based on the properties of quantum particles such as photons, which can exist in multiple states simultaneously and can be used to transmit information in a way that is resistant to eavesdropping. By leveraging the principles of quantum entanglement and superposition, quantum cryptography allows two parties to share a secret key that is completely secure and cannot be intercepted by an eavesdropper.
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