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In a significant advancement for quantum computing, researchers at the University of Oxford have successfully demonstrated distributed quantum computing by employing quantum teleportation of logical gates across an optical network link. This finding, published in the journal Nature, reveals a method to connect multiple quantum devices instead of relying on a single machine, addressing a major scalability challenge in the field. Lead researcher Dougal Main explained that instead of moving qubits, their approach enables the interaction of distinct quantum processors over distances.
The team, led by Professor David Lucas, successfully teleported the quantum state of an ion over approximately one meter. Lucas noted that this experiment proves that network-distributed quantum information processing is achievable with current technology, although scaling will continue to pose significant technical challenges. Quantum teleportation involves utilizing "quantum entanglement," allowing information to be transferred without the physical movement of particles. This breakthrough presents promising implications for the future of quantum computing infrastructure.