Quantum cryptography ensures secure communication from "summary" of The Quantum Universe by Brian Cox,Jeff Forshaw
When it comes to secure communication, traditional cryptographic systems face challenges due to the potential for eavesdropping and decryption by adversaries. However, quantum cryptography offers a solution to this problem by harnessing the principles of quantum mechanics to ensure secure communication between parties. The key idea behind quantum cryptography lies in the use of quantum properties, such as superposition and entanglement, to encode and transmit information in a way that is inherently secure. In a quantum cryptographic system, information is encoded into quantum bits, or qubits, which can exist in multiple states simultaneously thanks to the principle of superposition. This means that an eavesdropper attempting to intercept the qubits would disrupt t...
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