The discrete sampling variation measurement

被引：8

作者：

Danilishin, SL ^{[1
]}

Khalili, FY ^{[1
]}

Vyatchanin, SP ^{[1
]}

机构：

[1] Moscow State Univ, Dept Phys, Moscow 199899, Russia

来源：

PHYSICS LETTERS A | 2000年 / 278卷 / 03期

关键词：

D O I：

10.1016/S0375-9601(00)00761-1

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The modification of the variation quantum measurement is considered, which allows to eliminate the main shortcoming of such a measurement - the meter hardware setup dependence on the signal shape and arrival time. This method is based on approximation of the signal by series of short rectangular "slices" and periodical applying the Variation measurement procedure fitted to such a rectangular pulse. It allows to reconstruct the signal shape with precision not limited by the standard quantum limit. "Price", in the case of the parametric position meters (including interferometric ones), is pumping energy 720/pi (4) approximate to 7.4 times higher than for the usual variation measurement. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：123 / 128

页数：6

共 6 条

[1]

Braginsky V. B, 1992, QUANTUM MEASUREMENT

[2] QUANTUM NON-DEMOLITION MEASUREMENTS [J].