Implementing 2→M Phase-covariant Cloning in Spin Networks

被引：1
|
作者：
Wu, Lei [1 ]
Zhu, Ai-Dong [1 ,2 ,3 ]
Yeon, Kyu-Hwang [2 ,3 ]
Yu, Seong-Cho [2 ,3 ]
机构：
[1] Yanbian Univ, Dept Phys, Coll Sci, Yanjin 133002, Jilin, Peoples R China
[2] Chungbuk Natl Univ, Phys Program BK21, Cheongju 361763, Chungbuk, South Korea
[3] Chungbuk Natl Univ, Dept Phys, Coll Nat Sci, Cheongju 361763, Chungbuk, South Korea
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2010年 / 49卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Quantum cloning; Spin network; Fidelity; Magnetic field; QUANTUM CLONING;
D O I：
10.1007/s10773-009-0235-3
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We propose a scheme to implement 2 -> M phase-covariant quantum cloning machine by using a M+2 spin star network in which the two central spins interact with the M outer spins respectively. The effect of the magnetic field on the fidelity of the cloning is also investigated. By applying an external magnetic field on the spin system, the fidelity of the cloning machine can be largely improved.
引用
收藏
页码：542 / 548
页数：7
相关论文
共 50 条
  • [21] Implementing W States and an Ancilla-Free 1→M Phase-Covariant Cloning via Adiabatic Evolution
    Wang, Cong-Rong
    Li, Da-Chuang
    INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2012, 51 (01) : 221 - 228
  • [22] Optimal Phase-Covariant Cloning in 3 Dimensions
    张文海
    余龙宝
    曹卓良
    叶柳
    Communications in Theoretical Physics, 2012, 57 (06) : 991 - 994
  • [23] Implementation of optimal phase-covariant cloning machines
    Sciarrino, Fabio
    de Martini, Francesco
    PHYSICAL REVIEW A, 2007, 76 (01):
  • [24] Optimal asymmetric phase-covariant quantum cloning
    Zhang, Wen-Hai
    Yu, Long-Bao
    Ye, Liu
    PHYSICS LETTERS A, 2006, 356 (03) : 195 - 198
  • [25] Optimal Phase-Covariant Cloning in 3 Dimensions
    Zhang Wen-Hai
    Yu Long-Bao
    Cao Zhuo-Liang
    Ye Liu
    COMMUNICATIONS IN THEORETICAL PHYSICS, 2012, 57 (06) : 991 - 994
  • [26] Optimal phase-covariant cloning for qubits and qutrits
    D'Ariano, GM
    Macchiavello, C
    PHYSICAL REVIEW A, 2003, 67 (04):
  • [27] Experimental realization of 1→2 asymmetric phase-covariant quantum cloning
    Chen, Hongwei
    Zhou, Xianyi
    Suter, Dieter
    Du, Jiangfeng
    PHYSICAL REVIEW A, 2007, 75 (01):
  • [28] Realization of the optimal phase-covariant quantum cloning machine
    Sciarrino, F
    De Martini, F
    PHYSICAL REVIEW A, 2005, 72 (06):
  • [29] Process-optimized phase-covariant quantum cloning
    Kim, Chloe
    Chitambar, Eric
    PHYSICAL REVIEW A, 2022, 106 (02)
  • [30] Scheme to implement general phase-covariant quantum cloning
    Zhang, Wen-Hai
    Ye, Liu
    Dai, Jie-Lin
    INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2006, 4 (05) : 761 - 768
12345