Scalable quantum computation via local control of only two qubits

被引：81

作者：

Burgarth, Daniel ^{[1
,2
,3
]}

Maruyama, Koji ^{[3
]}

Murphy, Michael ^{[4
]}

Montangero, Simone ^{[4
]}

Calarco, Tommaso ^{[4
,5
]}

Nori, Franco ^{[3
,6
]}

Plenio, Martin B. ^{[1
,2
,7
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, IMS, London SW7 2PG, England

[2] Univ London Imperial Coll Sci Technol & Med, QOLS, London SW7 2PG, England

[3] RIKEN, Inst Phys & Chem Res, Adv Sci Inst, Wako, Saitama 3510198, Japan

[4] Univ Ulm, Inst Quanteninformat Verarbeitung, D-89069 Ulm, Germany

[5] European Ctr Theoret Studies Nucl Phys & Related, I-38050 Villazzano, Italy

[6] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[7] Univ Ulm, Inst Theoret Phys, D-89069 Ulm, Germany

来源：

PHYSICAL REVIEW A | 2010年 / 81卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

DYNAMICS;

D O I：

10.1103/PhysRevA.81.040303

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We apply quantum control techniques to a long spin chain by acting only on two qubits at one of its ends, thereby implementing universal quantum computation by a combination of quantum gates on these qubits and indirect SWAP operations across the chain. It is shown that the control sequences can be computed and implemented efficiently. We discuss the application of these ideas to physical systems such as superconducting qubits in which full control of long chains is challenging.

引用

页数：4

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