Deterministic implementations of fermionic quantum SWAP and Fredkin gates for spin qubits based on charge detection

doi:10.1088/1674-1056/21/4/040306

中国物理B ›› 2012, Vol. 21 ›› Issue (4): 40306-040306.doi: 10.1088/1674-1056/21/4/040306

王洪福,张寿,朱爱东

收稿日期:2011-10-10 修回日期:2011-10-28 出版日期:2012-02-29 发布日期:2012-02-29
通讯作者: 王洪福, E-mail:hfwang@ybu.edu.cn;张寿,szhang@ybu.edu.cn E-mail:hfwang@ybu.edu.cn;szhang@ybu.edu.cn

Deterministic implementations of fermionic quantum SWAP and Fredkin gates for spin qubits based on charge detection

Wang Hong-Fu(王洪福)^†, Zhang Shou(张寿)^‡, and Zhu Ai-Dong(朱爱东)

Department of Physics, College of Science, Yanbian University, Yanji 133002, China

Received:2011-10-10 Revised:2011-10-28 Online:2012-02-29 Published:2012-02-29
Contact: Wang Hong-Fu, E-mail:hfwang@ybu.edu.cn;Zhang Shou,szhang@ybu.edu.cn E-mail:hfwang@ybu.edu.cn;szhang@ybu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China(Grant Nos.11147174,61068001,11165015,and 11064016)and the Talent Program of Yanbian University of China(Grant No.950010001)

摘要/Abstract

Abstract: We propose a scheme to implement fermionic quantum SWAP and Fredkin gates for spin qubits with the aid of charge detection. The scheme is deterministic without the need of qubit-qubit interaction, and the proposed setups consist of simple polarizing beam splitters, single-spin rotations, and charge detectors. Compared with linear optics quantum computation, this charge-measurement-based qubit scheme greatly enhances the success probability for implementing quantum SWAP and Fredkin gates and greatly simplifies the experimental realization of scalable quantum computers with noninteracting electrons.

Key words: SWAP gate, Fredkin gate, charge detection

中图分类号: (Quantum computation architectures and implementations)

03.67.Lx

03.67.-a (Quantum information)

王洪福,张寿,朱爱东. [J]. 中国物理B, 2012, 21(4): 40306-040306.

Wang Hong-Fu(王洪福), Zhang Shou(张寿), and Zhu Ai-Dong(朱爱东) . Deterministic implementations of fermionic quantum SWAP and Fredkin gates for spin qubits based on charge detection[J]. Chin. Phys. B, 2012, 21(4): 40306-040306.

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Deterministic implementations of fermionic quantum SWAP and Fredkin gates for spin qubits based on charge detection

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