Optimal quantum estimation of the coupling between two bosonic modes

被引：10

作者：

D'Ariano, GM

Paris, MGA

Perinotti, P

机构：

[1] Univ Pavia, Sez INFN, I-27100 Pavia, Italy

[2] Univ Pavia, Unita INFM, I-27100 Pavia, Italy

[3] Univ Milan, Sez INFN, I-20133 Milan, Italy

来源：

JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS | 2001年 / 3卷 / 05期

关键词：

quantum interferometry; quantum phase; quantum estimation theory;

D O I：

10.1088/1464-4266/3/5/309

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We address the problem of the optimal quantum estimation of the coupling parameter of a bilinear interaction, such as the transmittivity of a beamsplitter or the internal phase-shift of an interferometer. The optimal measurement scheme confirms Heisenberg scaling of precision versus the total energy as an unsurpassable bound, but with a largely reduced multiplicative constant.

引用

页码：337 / 340

页数：4

共 15 条

[1] On the general problem of quantum phase estimation [J].