Generalized measurements via programmable quantum processor
量子物理
2009-11-10 v1
摘要
We show that it is possible to control the trade-off between information gain and disturbance in generalized measurements of qudits by utilizing the programmable quantum processor. This universal quantum machine allows us to perform a generalized measurement on the initial state of the input qudit to construct a Husimi function of this state. The trade-off between the gain and the disturbance of the qudit is controlled by the initial state of ancillary system that acts as a program register for the quantum-information distributor. The trade-off fidelity does not depend on the initial state of the qudit.
引用
@article{arxiv.quant-ph/0311172,
title = {Generalized measurements via programmable quantum processor},
author = {Marian Rosko and Vladimir Buzek and Paul Robert Chouha and Mark Hillery},
journal= {arXiv preprint arXiv:quant-ph/0311172},
year = {2009}
}
备注
8 pages, 4 figures