Universal quantum estimation

被引：28

作者：

D'Ariano, GM ^{[1
]}

机构：

[1] Ist Nazl Fis Mat, Sez Pavia, I-27100 Pavia, Italy

来源：

PHYSICS LETTERS A | 2000年 / 268卷 / 03期

关键词：

D O I：

10.1016/S0375-9601(00)00164-X

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A general method is presented for estimating the ensemble average of all operators of arbitrary quantum system from a set of measurements of a quorum of observables. A procedure for deconvolving any kind of instrumental noise is established. Physical implementations and measuring apparatuses are considered. Existing measuring procedures are derived as examples of application of the present general method. New measuring procedures are obtained which apply to different physical contexts. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：151 / 157

页数：7

共 27 条

[1] Reconstructing the density matrix of a spin s through Stern-Gerlach measurements:: II [J].

Amiet, JP ;

Weigert, S .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1999, 32 (25) :L269-L274

[2]

[Anonymous], 1997, J MOD OPT, V44

[3]

[Anonymous], CONCEPTUAL FDN QUANT

[4] ON SIMULTANEOUS MEASUREMENT OF A PAIR OF CONJUGATE OBSERVABLES [J].

ARTHURS, E ;

KELLY, JL .

BELL SYSTEM TECHNICAL JOURNAL, 1965, 44 (04) :725-+

[5] Maximum-likelihood estimation of the density matrix [J].

Banaszek, K ;

D'Ariano, GM ;

Paris, MGA ;

Sacchi, MF .

PHYSICAL REVIEW A, 2000, 61 (01) :4

[6] Direct probing of quantum phase space by photon counting [J].

Banaszek, K ;

Wodkiewicz, K .

PHYSICAL REVIEW LETTERS, 1996, 76 (23) :4344-4347

[7] Measurement of the quantum states of squeezed light [J].

Breitenbach, G ;

Schiller, S ;

Mlynek, J .

NATURE, 1997, 387 (6632) :471-475

[8]

CASSINELLI G, UNPUB

[9]

D'Ariano GM, 2000, QUANTUM COMMUNICATION, COMPUTING, AND MEASUREMENT 2, P137

[10] Loss-error compensation in quantum-state measurements [J].

D'Ariano, GM ;

Macchiavello, C .

PHYSICAL REVIEW A, 1998, 57 (04) :3131-3133

← 1 2 3 →