Universal quantum computer from a quantum magnet

被引：62

作者：

Cai, Jianming ^{[1
,2
]}

Miyake, Akimasa ^{[3
]}

Duer, Wolfgang ^{[2
]}

Briegel, Hans J. ^{[1
,2
]}

机构：

[1] Austrian Acad Sci, Inst Quantenopt & Quanteninformat, Innsbruck, Austria

[2] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria

[3] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada

来源：

PHYSICAL REVIEW A | 2010年 / 82卷 / 05期

关键词：

ENTANGLEMENT; MATRIX;

D O I：

10.1103/PhysRevA.82.052309

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We show that a local Hamiltonian of spin-3/2 particles with only two-body nearest-neighbor Affleck-Kennedy-Lieb-Tasaki and exchange-type interactions has a unique ground state, which can be used to implement universal quantum computation merely with single-spin measurements. We prove that the Hamiltonian is gapped, independent of the system size. Our result provides a further step toward utilizing systems with condensed-matter-type interactions for measurement-based quantum computation.

引用

页数：5

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