UNIVERSAL QUANTUM COMPUTATION WITH QUANTUM-DOT CELLULAR AUTOMATA IN DECOHERENCE-FREE SUBSPACE

被引：0
|
作者：
Xu, Z. Y. [1 ,2 ]
Feng, M. [1 ]
Zhang, W. M. [3 ,4 ]
机构：
[1] Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Wuhan 100049, Peoples R China
[3] Natl Cheng Kung Univ, Dept Phys, Tainan 70101, Peoples R China
[4] Natl Cheng Kung Univ, Ctr Quantum Informat Sci, Tainan 70101, Peoples R China
来源：
QUANTUM INFORMATION & COMPUTATION | 2008年 / 8卷 / 10期
关键词：
Decoherence-free subspace (DFS); Quantum-dot cellular automata (QCA); Universal quantum computation (UQC);
D O I：
暂无
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
We investigate the possibility to have electron-pairs in decoherence-free subspace (DFS), by means of the quantum-dot cellular automata (QCA) and single-spin rotations, to deterministically carry out a universal quantum computation with high-fidelity. We show that our QCA device with electrons tunneling in two dimensions is very suitable for DFS encoding, and argue that our design favors a scalable quantum computation robust to collective dephasing errors.
引用
收藏
页码：977 / 986
页数：10
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