Long-range quantum entanglement in noisy cluster states

被引：156

作者：

Raussendorf, R ^{[1
]}

Bravyi, S ^{[1
]}

Harrington, J ^{[1
]}

机构：

[1] CALTECH, Inst Quantum Informat, Pasadena, CA 91125 USA

来源：

PHYSICAL REVIEW A | 2005年 / 71卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevA.71.062313

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We describe a phase transition for long-range entanglement in a three-dimensional cluster state affected by noise. The partially decohered state is modeled by the thermal state of a short-range translation-invariant Hamiltonian. We find that the temperature at which the entanglement length changes from infinite to finite is nonzero. We give an upper and lower bound to this transition temperature.

引用

页数：6

共 21 条

[1] VALENCE BOND GROUND-STATES IN ISOTROPIC QUANTUM ANTIFERROMAGNETS [J].

AFFLECK, I ;

KENNEDY, T ;

LIEB, EH ;

TASAKI, H .

COMMUNICATIONS IN MATHEMATICAL PHYSICS, 1988, 115 (03) :477-528

[2]

AHARONOV D, QUANTPH9910081

[3] EXPERIMENTAL TESTS OF REALISTIC LOCAL THEORIES VIA BELLS THEOREM [J].

ASPECT, A ;

GRANGIER, P ;

ROGER, G .

PHYSICAL REVIEW LETTERS, 1981, 47 (07) :460-463

[4]

Bell JS., 1964, PHYS PHYS FIZIKA, V1, P195, DOI [10.1103/Physics-PhysiqueFizika.1.195, 10.1103/PhysicsPhysiqueFizika.1.195, DOI 10.1103/PHYSICSPHYSIQUEFIZIKA.1.195]

[5]

Bravyi S. B., QUANTPH9811052

[6] Quantum repeaters:: The role of imperfect local operations in quantum communication [J].

Briegel, HJ ;

Dür, W ;

Cirac, JI ;

Zoller, P .

PHYSICAL REVIEW LETTERS, 1998, 81 (26) :5932-5935

[7] Persistent entanglement in arrays of interacting particles [J].

Briegel, HJ ;

Raussendorf, R .

PHYSICAL REVIEW LETTERS, 2001, 86 (05) :910-913

[8]

DENNIS E, QUANTPH0110143

[9] Stability of macroscopic entanglement under decoherence -: art. no. 180403 [J].

Dür, W ;

Briegel, HJ .

PHYSICAL REVIEW LETTERS, 2004, 92 (18) :180403-1

[10] Separability of mixed states: Necessary and sufficient conditions [J].

Horodecki, M ;

Horodecki, P ;

Horodecki, R .

PHYSICS LETTERS A, 1996, 223 (1-2) :1-8

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