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

页码：977 / 986

页数：10

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