Amplitude Damping for single-qubit System with single-qubit mixed-state Environment
Quantum Physics
2009-11-13 v3
Abstract
We study a generalized amplitude damping channel when environment is initially in the single-qubit mixed state. Representing the affine transformation of the generalized amplitude damping by a three-dimensional volume, we plot explicitly the volume occupied by the channels simulatable by a single-qubit mixed-state environment. As expected, this volume is embedded in the total volume by the channels which is simulated by two-qubit enviroment. The volume ratio is approximately 0.08 which is much smaller than 3/8, the volume ratio for generalized depolarizing channels.
Cite
@article{arxiv.0705.3952,
title = {Amplitude Damping for single-qubit System with single-qubit mixed-state Environment},
author = {Eylee Jung and Mi-Ra Hwang and You Hwan Ju and D. K. Park and Hungsoo Kim and Min-Soo Kim and Jin-Woo Son},
journal= {arXiv preprint arXiv:0705.3952},
year = {2009}
}