The Evolution of Quantum Secure Direct Communication: On the Road to the Qinternet

The Evolution of Quantum Secure Direct Communication: On the Road to the Qinternet Communication security has to evolve to a higher plane in the face of the threat from the massive computing power of the emerging quantum computers. Quantum secure direct communication (QSDC) constitutes a promising branch of quantum communication, which is provably secure and overcomes the threat of quantum computing, whilst conveying secret messages directly via the quantum channel. In this survey, we highlight...