Complementarity and additivity for depolarizing channels

In this paper we use the method of a recent paper (quant-ph/0509101) to compute complementary channels for certain important cases, such as depolarizing and transpose-depolarizing channels. This method allows us to easily obtain the minimal Kraus representations from non--minimal ones. We also study...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2005-10
Main Authors: Datta, Nilanjana, Holevo, Alexander S
Format: Article
Language:English
Subjects:
Channels
Depolarization
Tensors
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper we use the method of a recent paper (quant-ph/0509101) to compute complementary channels for certain important cases, such as depolarizing and transpose-depolarizing channels. This method allows us to easily obtain the minimal Kraus representations from non--minimal ones. We also study the properties of the output purity of the tensor product of a channel and its complement.
ISSN:2331-8422