Coherent superposition states as quantum rulers

被引：49

作者：

Ralph, TC ^{[1
]}

机构：

[1] Univ Queensland, Dept Phys, Ctr Quantum Comp Technol, St Lucia, Qld 4072, Australia

来源：

PHYSICAL REVIEW A | 2002年 / 65卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.65.042313

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We explore the sensitivity of an interferometer based on a quantum circuit for coherent states. We show that its sensitivity is at the Heisenberg limit. Moreover, we show that this arrangement can measure very small length intervals.

引用

页数：5

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