Physics – Quantum Physics
Scientific paper
1999-12-28
Phys. Rev. A 62, 032303 (2000)
Physics
Quantum Physics
24 pages, 7 figs; Final versiob after minor changes, title changed; to be published in Phys. Rev. A, September 2000
Scientific paper
10.1103/PhysRevA.62.032303
The coherent information concept is used to analyze a variety of simple quantum systems. Coherent information was calculated for the information decay in a two-level atom in the presence of an external resonant field, for the information exchange between two coupled two-level atoms, and for the information transfer from a two-level atom to another atom and to a photon field. The coherent information is shown to be equal to zero for all full-measurement procedures, but it completely retains its original value for quantum duplication. Transmission of information from one open subsystem to another one in the entire closed system is analyzed to learn quantum information about the forbidden atomic transition via a dipole active transition of the same atom. It is argued that coherent information can be used effectively to quantify the information channels in physical systems where quantum coherence plays an important role.
Grishanin Boris A.
Zadkov Victor N.
No associations
LandOfFree
Coherent information analysis of quantum channels in simple quantum systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Coherent information analysis of quantum channels in simple quantum systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coherent information analysis of quantum channels in simple quantum systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-295663