TOMOGRAPHIC MEASUREMENT OF THE DENSITY-MATRIX OF THE RADIATION-FIELD

被引：25
作者：
DARIANO, GM [1 ]
机构：
[1] DIPARTIMENTO FIS A VOLTA, VIA BASSI 6, I-27100 PAVIA, ITALY
来源：
QUANTUM AND SEMICLASSICAL OPTICS | 1995年 / 7卷 / 04期
关键词：
D O I：
10.1088/1355-5111/7/4/022
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Recently a novel homodine tomographic technique has been proposed which allows us to detect the density matrix experimentally in terms of averages on data. The method has been further extended to a general matrix element (psi/rho/phi) of the density operator rho, along with the possibility of using low-efficiency detectors. In this paper this technique is reconsidered as a new genuine quantum measurement. Numerical results for measured probabilities are given, and the mechanism underlying the generation of statistical errors in the measured matrix is illustrated. It is shown that the data processing of the novel technique can also be used as a new imaging algorithm for conventional tomography.
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页码：693 / 704
页数：12
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