Scalable implementation of ancilla-free optimal 1 → M phase-covariant quantum cloning by combining quantum Zeno dynamics and adiabatic passage

被引：2

作者：

Shao, Xiao-Qiang ^{[1
]}

Zheng, Tai-Yu ^{[1
]}

Zhang, Shou ^{[2
]}

机构：

[1] NE Normal Univ, Sch Phys, Changchun 130024, Peoples R China

[2] Yanbian Univ, Coll Sci, Dept Phys, Yanji 133002, Jilin, Peoples R China

来源：

PHYSICS LETTERS A | 2011年 / 375卷 / 40期

基金：

中国国家自然科学基金;

关键词：

Quantum cloning; Quantum Zeno dynamics; CRYPTOGRAPHY; MACHINES;

D O I：

10.1016/j.physleta.2011.08.012

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A scalable way for implementation of ancilla-free optimal 1 -> M phase-covariant quantum cloning (PCC) is proposed by combining quantum Zeno dynamics and adiabatic passage. An optimal 1 -> M PCC can be achieved directly from the existed optimal 1 -> (M - 1) PCC without excited states population during the whole process. The cases for optimal 1 -> 3 (4) PCCs are discussed detailedly to show that the scheme is robust against the effect of decoherence. Moreover, the time for carrying out each cloning transformation is regular, which may reduce the complexity for achieving the optimal PCC in experiment. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：3504 / 3508

页数：5

共 23 条

[1] Optimal eavesdropping in cryptography with three-dimensional quantum states [J].

Bruss, D ;

Macchiavello, C .

PHYSICAL REVIEW LETTERS, 2002, 88 (12) :4

[2]

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

[3] Security of quantum key distribution using d-level systems -: art. no. 127902 [J].

Cerf, NJ ;

Bourennane, M ;

Karlsson, A ;

Gisin, N .

PHYSICAL REVIEW LETTERS, 2002, 88 (12) :4-127902

[4] Optimal quantum cloning via spin networks [J].

Chen, Qing ;

Cheng, Jianhua ;

Wang, Ke-Lin ;

Du, Jiangfeng .

PHYSICAL REVIEW A, 2006, 74 (03)

[5] Improving fidelity of quantum cloning via the Dzyaloshinskii-Moriya interaction in a spin network [J].

Chen, Yuhan ;

Shao, Xiao-Qiang ;

Zhu, Aidong ;

Yeon, Kyu-Hwang ;

Yu, Seong-Cho .

PHYSICAL REVIEW A, 2010, 81 (03)

[6]

Chuang I. N., 2000, Quantum Computation and Quantum Information

[7] Quantum cryptography [J].

Dusek, Miloslav ;

Luetkenhaus, Norbert ;

Hendrych, Martin .

PROGRESS IN OPTICS, VOL 49, 2006, 49 :381-454

[8] Quantum Zeno subspaces [J].

Facchi, P ;

Pascazio, S .

PHYSICAL REVIEW LETTERS, 2002, 89 (08)

[9] Quantum Zeno effect and dynamics [J].

Facchi, Paolo ;

Ligabo, Marilena .

JOURNAL OF MATHEMATICAL PHYSICS, 2010, 51 (02)

[10] Quantum cloning machines for equatorial qubits [J].

Fan, H ;

Matsumoto, K ;

Wang, XB ;

Wadati, M .

PHYSICAL REVIEW A, 2002, 65 (01) :123041-123047

← 1 2 3 →