Author

Vaughn Sohn

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Preprint Aug 2026

Optimal copy complexity of quantum state cloning

Quantum state cloning is the task of approximately producing additional copies of an unknown quantum state from a finite number of input copies. The optimal cloning fidelity is known exactly for pure states, but no comparable characterization is known for general mixed states. We determine the optimal asymptotic copy c...

Sangwoo Jeon, Vaughn Sohn, Changhun Oh · 1 citation