Quantum cloning with multicopy in d-dimensions

被引：2

作者：

Zhang WenHai ^{[1
]}

Yu LongBao ^{[2
]}

Yang Ming ^{[3
]}

Cao ZhuoLiang ^{[2
,3
]}

机构：

[1] Huainan Normal Univ, Dept Phys, Huainan 232038, Peoples R China

[2] Hefei Teachers Coll, Dept Phys & Elect Engn, Hefei 230061, Peoples R China

[3] Anhui Univ, Sch Phys & Mat Sci, Hefei 230039, Peoples R China

来源：

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2011年 / 54卷 / 12期

基金：

中国国家自然科学基金;

关键词：

quantum cloning; universal quantum cloning; phase-covariant quantum cloning; economical phase-covariant quantum cloning; PURE STATES; CRYPTOGRAPHY;

D O I：

10.1007/s11433-011-4540-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The explicit transformations of the 1 -> 3 optimal universal quantum cloning and the optimal phase-covariant quantum cloning in d-dimensions are presented, and the dimensionalities of their ancillary systems are both d-dimensions. As d -> a, their clone fidelities move toward 1/3, showing a classical limit for the fidelity of quantum cloning. Based on the reduction of the unitary transformation of quantum cloning, the transformation of the 1 -> M=d+1 optimal economical phase-covariant quantum cloning in d-dimensions is derived, and the clone fidelity is covered by the theoretical value.

引用

页码：2217 / 2224

页数：8

共 28 条

[1]

Bruss D, 2000, PHYS REV A, V62, DOI [10.1103/PhysRevA.62.062302, 10.1103/PhysRevA.62.012302]

[2] Economical phase-covariant cloning of qudits [J].

Buscemi, F ;

D'Ariano, GM ;

Macchiavello, C .

PHYSICAL REVIEW A, 2005, 71 (04)

[3] Universal optimal cloning of arbitrary quantum states: From qubits to quantum registers [J].

Buzek, V ;

Hillery, M .

PHYSICAL REVIEW LETTERS, 1998, 81 (22) :5003-5006

[4] Quantum copying: Beyond the no-cloning theorem [J].

Buzek, V ;

Hillery, M .

PHYSICAL REVIEW A, 1996, 54 (03) :1844-1852

[5] Pauli cloning of a quantum bit [J].

Cerf, NJ .

PHYSICAL REVIEW LETTERS, 2000, 84 (19) :4497-4500

[6] Optimal Cloning of Unitary Transformation [J].

Chiribella, Giulio ;

D'Ariano, Giacomo Mauro ;

Perinotti, Paolo .

PHYSICAL REVIEW LETTERS, 2008, 101 (18)

[7] Optimal phase-covariant cloning for qubits and qutrits [J].

D'Ariano, GM ;

Macchiavello, C .

PHYSICAL REVIEW A, 2003, 67 (04) :9

[8] Sequential quantum cloning [J].

Delgado, Y. ;

Lamata, L. ;

Leon, J. ;

Salgado, D. ;

Solano, E. .

PHYSICAL REVIEW LETTERS, 2007, 98 (15)

[9]

ENK SJ, 2005, PHYS REV LETT, V95

[10] Phase-covariant quantum cloning of qudits [J].

Fan, H ;

Imai, H ;

Matsumoto, K ;

Wang, XB .

PHYSICAL REVIEW A, 2003, 67 (02) :5

← 1 2 3 →