2001/10/02 by J. Fiurasek, Jaromı́r Fiurášek, S. Iblisdir +4 · 1 citation
Computer Science · Mathematics · Physics and Astronomy · #Biology #Cloning (programming) #Combinatorics #Computer science #Gene #Genetics #Laser-Matter Interactions and Applications #Mathematics #Physics #Quantum #Quantum Information and Cryptography #Quantum cloning #Quantum error correction #Quantum mechanics #Quantum optics and atomic interactions #Qubit #Topology (electrical circuits) #Transformation (genetics) #quant-ph
paper · pdf · doi:10.1103/physreva.65.040302
published as Phys. Rev. A 65, 040302(R) (2002). · 4 pages, 1 figure, RevTeX 4
arxiv created 2001/10/02 · openalex publication_date 2002/04/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
An optimal universal cloning transformation is derived that produces M copies of an unknown qubit from a pair of orthogonal qubits. For M>6, the corresponding cloning fidelity is higher than that of the optimal copying of a pair of identical qubits. It is shown that this cloning transformation can be implemented probabilistically via parametric down conversion by feeding the signal and idler modes of a nonlinear crystal with orthogonally polarized photons.