Abstract
Given two sets of quantum states {A1,..., Ak} and {B1,..., Bk}, represented as sets as density matrices, necessary and sufficient conditions are obtained for the existence of a physical transformation T, represented as a trace-preserving completely positive map, such that T(Ai) = Bi for i = 1,..., k. General completely positive maps without the trace-preserving requirement, and unital completely positive maps transforming the states are also considered.
Original language | English |
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Article number | 102209 |
Journal | Journal of Mathematical Physics |
Volume | 53 |
Issue number | 10 |
DOIs | |
Publication status | Published - 12 Sept 2012 |
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Mathematical Physics