Quantum information: How much information in a state vector?
Quantum Physics
2007-05-23 v1
Abstract
Quantum information refers to the distinctive information-processing properties of quantum systems, which arise when information is stored in or retrieved from nonorthogonal quantum states. More information is required to prepare an ensemble of nonorthogonal quantum states than can be recovered from the ensemble by measurements. Nonorthogonal quantum states cannot be distinguished reliably, cannot be copied or cloned, and do not lead to exact predictions for the results of measurements. These properties contrast sharply with those of information stored in the microstates of a classical system.
Cite
@article{arxiv.quant-ph/9601025,
title = {Quantum information: How much information in a state vector?},
author = {Carlton M. Caves and Christopher A. Fuchs},
journal= {arXiv preprint arXiv:quant-ph/9601025},
year = {2007}
}
Comments
32 pages in plain TeX, to appear in Sixty Years of EPR, edited by A. Mann and M. Revzen, Ann. Phys. Soc., Israel, 1996