No-compressing of quantum phase information
Quantum Physics
2011-12-14 v4
Abstract
We raise a general question of quantum information theory whether the quantum phase information can be compressed and retrieved. A general qubit contains both amplitude and phase information, while an equatorial qubit contains only a phase information. We study whether it is possible to compress the phase information of n equatorial qubits into m general qubits with m being less than n, and still those information can be retrieved perfectly. We prove that this process is not allowed by quantum mechanics.
Cite
@article{arxiv.1105.5258,
title = {No-compressing of quantum phase information},
author = {Yi-Nan Wang and Han-Duo Shi and Li Jing and Zhao-Xi Xiong and Jin Lei and Liang-Zhu Mu and Heng Fan},
journal= {arXiv preprint arXiv:1105.5258},
year = {2011}
}
Comments
4 pages, 1 figure