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Universal Transformations for Finite Dimensional Quantum Systems
Author(s) -
Macchiavello C.
Publication year - 2000
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/(sici)1521-3978(200005)48:5/7<545::aid-prop545>3.0.co;2-g
Subject(s) - quantum cloning , connection (principal bundle) , quantum , dimension (graph theory) , cloning (programming) , computer science , quantum state , quantum information , topology (electrical circuits) , theoretical computer science , mathematics , quantum error correction , physics , quantum mechanics , pure mathematics , geometry , combinatorics , programming language
We describe in a unified way universal operations for quantum systems with arbitrary finite dimension and show some links among them. In particular, we discuss a connection between optimal universal cloning and optimal state estimation. We then describe the operation of the depolarising quantum channel, its connection to quantum cloning and ways to contrast the undesired effects of its action.