Physical transformations between quantum states

Zejun Huang, Chi Kwong Li, Edward Poon, Nung Sing Sze

Research output: Journal article publicationJournal articleAcademic researchpeer-review

15 Citations (Scopus)


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 languageEnglish
Article number102209
JournalJournal of Mathematical Physics
Issue number10
Publication statusPublished - 12 Sept 2012

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics


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