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

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