Quantum calibration of measurement instrumentation

被引：81

作者：

D'Ariano, GM

Maccone, L

Lo Presti, P

机构：

[1] Univ Pavia, QUIT Quantum Informat Theory Grp, I-27100 Pavia, Italy

[2] Univ Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy

[3] Northwestern Univ, Dept Elect & Comp Engn, Ctr Photon Commun & Comp, Evanston, IL 60208 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.93.250407

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By quantum calibration we name an experimental procedure apt to completely characterize an unknown measurement apparatus by comparing it with a few other calibrated apparatuses. Here we show how to achieve the calibration of an arbitrary measuring apparatus, by using it in combination with a tomographer in a correlation setup with an input bipartite system. The method is robust to imperfections of the tomographer, and works for practically any input state of the bipartite system.

引用

页数：4

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