Optimal state estimation for d-dimensional quantum systems

被引：105

作者：

Bruss, D

Macchiavello, C

机构：

[1] ISI, I-10133 Turin, Italy

[2] Dipartimento Fis A Volta, I-27100 Pavia, Italy

[3] INFM, Unita Pavia, I-27100 Pavia, Italy

来源：

PHYSICS LETTERS A | 1999年 / 253卷 / 5-6期

关键词：

D O I：

10.1016/S0375-9601(99)00099-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We establish a connection between optimal quantum cloning and optimal state estimation for d-dimensional quantum systems. In this way we derive an upper limit on the fidelity of state estimation for d-dimensional pure quantum states and, furthermore, for generalized inputs supported on the symmetric subspace, (C) 1999 Published by Elsevier Science B.V.

引用

页码：249 / 251

页数：3

共 5 条

[1] Optimal universal quantum cloning and state estimation [J].

Bruss, D ;

Ekert, A ;

Macchiavello, C .

PHYSICAL REVIEW LETTERS, 1998, 81 (12) :2598-2601

[2] OPTIMAL EXTRACTION OF INFORMATION FROM FINITE QUANTUM ENSEMBLES [J].

MASSAR, S ;

POPESCU, S .

PHYSICAL REVIEW LETTERS, 1995, 74 (08) :1259-1263

[3] DESCRIPTION OF ENTANGLEMENT [J].

SCHLIENZ, J ;

MAHLER, G .

PHYSICAL REVIEW A, 1995, 52 (06) :4396-4404

[4] Optimal cloning of pure states [J].

Werner, RF .

PHYSICAL REVIEW A, 1998, 58 (03) :1827-1832

[5] Quantum cloning in d dimensions [J].

Zanardi, P .

PHYSICAL REVIEW A, 1998, 58 (05) :3484-3490

← 1 →