1999/01/26 by Nicolas Gisin, N. Gisin, S. Popescu +1 · 2 citations
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #quant-ph
paper · pdf · doi:10.1103/physrevlett.83.432
published as Physical Review Letters, 82, 432-435, 1999
arxiv created 1999/01/26 · openalex publication_date 1999/07/12 · arxiv updated 2013/01/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
We consider two different ways to encode quantum information, by parallel or antiparallel pairs of spins. We find that there is more information in the antiparallel ones. This purely quantum mechanical effect is due to entanglement, not of the states but occurring in the course of the measuring process. We also introduce a range of quantum information processing machines, such as spin flip and anticloning.