2017/04/30 by F. Rezazadeh, A. Mani, Azam Mani +2 · 9 citations
Computer Science · Engineering · Mathematics · Physics and Astronomy · #Artificial intelligence #Combinatorics #Computer science #Coordinate system #Engineering #Fidelity #Mathematics #Physics #Property (philosophy) #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #Quantum information science #Quantum mechanics #Qubit #Spin (aerodynamics) #Task (project management) #Telecommunications #Theoretical computer science #Topology (electrical circuits) #quant-ph
paper · pdf · doi:10.1103/physreva.96.022310
published in Physical Review A 96(2) (American Physical Society) · 12 pages, 5 figures, Accepted for publication in Physical Review A
arxiv created 2017/07/18 · openalex publication_date 2017/08/11 · arxiv updated 2017/08/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We show that two parties far apart can use shared entangled states and classical communication to align their coordinate systems with a very high fidelity. Moreover, compared with previous methods proposed for such a task, i.e., sending parallel or antiparallel pairs or groups of spin states, our method has the extra advantages of using single-qubit measurements and also being secure, so that third parties do not extract any information about the aligned coordinate system established between the two parties. The latter property is important in many other quantum information protocols in which measurements inevitably play a significant role.