COMPENSATION OF LOSSES IN PHOTODETECTION AND IN QUANTUM-STATE MEASUREMENTS

被引：85

作者：

KISS, T ^{[1
]}

HERZOG, U ^{[1
]}

LEONHARDT, U ^{[1
]}

机构：

[1] HUNGARIAN ACAD SCI, CRYSTAL PHYS RES LAB, H-1502 BUDAPEST, HUNGARY

来源：

PHYSICAL REVIEW A | 1995年 / 52卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.52.2433

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We show how losses in photodetection and in quantum-state measurements can be numerically compensated after the measurements have been performed. When the overall efficiency exceeds 1/2, our recipe works for all quantum states. For smaller efficiencies, however, the convergence of the compensation procedure depends on the quantum state under investigation.

引用

页码：2433 / 2435

页数：3

共 17 条

[1]

ARIANO GM, 1994, PHYS LETT A, V187, P231

[2] QUANTUM-MECHANICAL LOSSLESS BEAM SPLITTER - SU(2) SYMMETRY AND PHOTON STATISTICS [J].

CAMPOS, RA ;

SALEH, BEA ;

TEICH, MC .

PHYSICAL REVIEW A, 1989, 40 (03) :1371-1384

[3] DETECTION OF THE DENSITY-MATRIX THROUGH OPTICAL HOMODYNE TOMOGRAPHY WITHOUT FILTERED BACK-PROJECTION [J].

DARIANO, GM ;

MACCHIAVELLO, C ;

PARIS, MGA .

PHYSICAL REVIEW A, 1994, 50 (05) :4298-4302

[4]

DARIANO GM, UNPUB

[5]

DOWLING JP, 1991, ANN PHYS-LEIPZIG, V48, P423

[6]

FISZ M, 1962, WAHRSCHEINLICHKEITSR

[7] EXTERNAL PHOTODETECTION OF CAVITY RADIATION [J].

LEE, CT .

PHYSICAL REVIEW A, 1993, 48 (03) :2285-2291

[8] HIGH-ACCURACY OPTICAL HOMODYNE DETECTION WITH LOW-EFFICIENCY DETECTORS - PREAMPLIFICATION FROM ANTISQUEEZING [J].

LEONHARDT, U ;

PAUL, H .

PHYSICAL REVIEW LETTERS, 1994, 72 (26) :4086-4089

[9] REALISTIC OPTICAL HOMODYNE MEASUREMENTS AND QUASI-PROBABILITY DISTRIBUTIONS [J].

LEONHARDT, U ;

PAUL, H .

PHYSICAL REVIEW A, 1993, 48 (06) :4598-4604

[10] QUANTUM STATISTICS OF A LOSSLESS BEAM SPLITTER - SU(2) SYMMETRY IN-PHASE SPACE [J].

LEONHARDT, U .

PHYSICAL REVIEW A, 1993, 48 (04) :3265-3277

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