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Quantum Cloning Machine Could Prevent Hacking

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Universal optimal quantum cloning of high-dimensional photonic states has been achieved using the symmetrization method. The work has led to the discovery of information that could help system administrators protect quantum computing networks from external attacks. Researchers at the University of Ottawa demonstrated the feasibility of high-dimensional optimal cloning of orbital angular momentum (OAM) states of single photons and used their discovery to perform a cloning attack to a secure quantum channel. The team cloned the qubits of a secure quantum message as well as the no-cloning...Read full article

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