Coherent state transfer through a multi-channel quantum network: Natural versus controlled evolution passage

被引：11

作者：

Chen, Bing ^{[1
,2
]}

Li, Yong ^{[2
,3
]}

机构：

[1] Shandong Univ Sci & Technol, Coll Elect Commun & Phys, Qingdao 266510, Peoples R China

[2] Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China

[3] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Peoples R China

来源：

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2016年 / 59卷 / 04期

基金：

中国国家自然科学基金;

关键词：

tight-binding model; quantum state transfer; adiabatic passage; DATA BUS;

D O I：

10.1007/s11433-016-5791-y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quantum state transfer (QST) is an important task in quantum information processing. In this study, we describe two approaches for the high-fidelity transfer of a quantum state between two opposite quantum dots attached to a multi-channel quantum network. First, we demonstrate that a high-efficiency QST can be achieved with the coherent time evolution of a quantum system without any external control. Second, we present an approach that uses an alternative mechanism for a high-fidelity QST. By adiabatically varying tunnel couplings, it is possible to implement the complete transmission of a quantum state based on this quantum mechanical mechanism.

引用

页码：1 / 6

页数：6

共 40 条

[1] Quantum communication through an unmodulated spin chain [J].

Bose, S .

PHYSICAL REVIEW LETTERS, 2003, 91 (20)

[2] Exploiting boundary states of imperfect spin chains for high-fidelity state transfer [J].

Bruderer, M. ;

Franke, K. ;

Ragg, S. ;

Belzig, W. ;

Obreschkow, D. .

PHYSICAL REVIEW A, 2012, 85 (02)

[3] Multipath adiabatic quantum state transfer [J].

Chen, Bing ;

Fan, Wei ;

Xu, Yan ;

Peng, Yan-Dong ;

Zhang, Hui-Yun .

PHYSICAL REVIEW A, 2013, 88 (02)

[4] Long-range adiabatic quantum state transfer through a linear array of quantum dots [J].

Chen Bing ;

Shen QingHui ;

Fan Wei ;

Xu Yan .

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2012, 55 (09) :1635-1640

[5] Long-range adiabatic quantum state transfer through a tight-binding chain as a quantum data bus [J].

Chen, Bing ;

Fan, Wei ;

Xu, Yan ;

Chen, Zhao-yang ;

Feng, Xun-li ;

Oh, C. H. .

PHYSICAL REVIEW A, 2012, 86 (01)

[6] Adiabatic quantum state transfer in a nonuniform triple-quantum-dot system [J].

Chen, Bing ;

Fan, Wei ;

Xu, Yan .

PHYSICAL REVIEW A, 2011, 83 (01)

[7] Two-band model as a quantum data bus for quantum state transfer [J].

Chen Bing ;

Song Zhi .

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2010, 53 (07) :1266-1270

[8] Perfect state transfer in quantum spin networks [J].

Christandl, M ;

Datta, N ;

Ekert, A ;

Landahl, AJ .

PHYSICAL REVIEW LETTERS, 2004, 92 (18) :187902-1

[9] Adiabatic transfer of light via a continuum in optical waveguides [J].

Dreisow, F. ;

Szameit, A. ;

Heinrich, M. ;

Keil, R. ;

Nolte, S. ;

Tuennermann, A. ;

Longhi, S. .

OPTICS LETTERS, 2009, 34 (16) :2405-2407

[10] Three level atom optics in dipole traps and waveguides [J].

Eckert, K. ;

Mompart, J. ;

Corbalan, R. ;

Lewenstein, M. ;

Birkl, G. .

OPTICS COMMUNICATIONS, 2006, 264 (02) :264-270

← 1 2 3 4 →