Quantum tomography for measuring experimentally the matrix elements of an arbitrary quantum operation

被引：254

作者：

D'Ariano, GM ^{[1
]}

Lo Presti, P ^{[1
]}

机构：

[1] Univ Pavia, Dipartimento Fis Alessandro Volta, Quantum Theory Opt Grp, INFM,Unita Pavia, I-27100 Pavia, Italy

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 19期

关键词：

Quantum tomography;

D O I：

10.1103/PhysRevLett.86.4195

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quantum operations describe any state change allowed in quantum mechanics, including the evolution of an open system or the state change due to a measurement. We present a general method based on quantum tomography for measuring experimentally the matrix elements of an arbitrary quantum operation. As input the method needs only a single entangled state. The feasibility of the technique for the electromagnetic field is shown. and the experimental setup is illustrated based on homodyne tomography of a twin beam.

引用

页码：4195 / 4198

页数：4

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