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Title: Some characterizations of quantum channel in infinite Hilbert spaces

We first show that for any quantum states ρ on H and σ on K there exists a quantum channel Φ such that Φ(ρ) = σ, where H and K are finite or infinite dimensional Hilbert spaces. Then we consider some conclusions for the quantum channel Φ such that Φ(ρ) = σ and Φ(I{sub H}) exists or Φ(I{sub H})=I{sub K}.
Authors:
 [1] ;  [2] ;  [1]
  1. College of Mathematics and Information Science, Shaanxi Normal University, Xi'an 710062 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22250590
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Mathematical Physics; Journal Volume: 55; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; EIGENVALUES; HILBERT SPACE; QUANTUM INFORMATION; QUANTUM STATES