Quantum estimation of relative information
量子物理
2008-09-03 v2
摘要
We derive optimal schemes for preparation and estimation of relational degrees of freedom between two quantum systems. We specifically analyze the case of rotation parameters representing relative angles between elements of the SU(2) symmetry group. Our estimation procedure does not assume prior knowledge of the absolute spatial orientation of the systems and as such does not require information on the underlying classical reference frame in which the states are prepared.
引用
@article{arxiv.quant-ph/0506223,
title = {Quantum estimation of relative information},
author = {Netanel H. Lindner and Petra F. Scudo and Dagmar Bruss},
journal= {arXiv preprint arXiv:quant-ph/0506223},
year = {2008}
}
备注
Contribution to the Int. J. of Quant. Info. issue dedicated to the memory of Asher Peres