Avoiding Loss of Fidelity for Universal Entangling Geometric Quantum Gate

被引：10

作者：

Chen, Z. Q. ^{[1
]}

Wang, J. Q. ^{[1
,2
]}

Li, X. L. ^{[1
]}

Ji, Y. H. ^{[1
]}

Zhang, B. R. ^{[3
]}

Jiang, Y. Y. ^{[1
]}

Wang, Z. S. ^{[1
]}

机构：

[1] Jiangxi Normal Univ, Coll Phys & Commun Elect, Nanchang 330022, Peoples R China

[2] Hubei Radio TV Univ, Wuhan 430074, Peoples R China

[3] Wuhan Univ Technol, Dept Appl Chem, Wuhan 430070, Peoples R China

来源：

INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2009年 / 48卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Geometric phase; Geometric quantum computation; Geometric quantum gate; Fidelity; COMPUTATION; PHASE;

D O I：

10.1007/s10773-009-0082-2

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A strategy to perfectly preserve the two-qubit state is investigated in geometric quantum computation for nuclear magnetic resonance system. The results show that, by controlling the azimuthal angle in the initial state, we may realize the geometric quantum gate with a perfect fidelity under the geometric quantum computation. The way may be extended to other physical systems.

引用

页码：2904 / 2915

页数：12

共 25 条

[1] Strong-driving-assisted unconventional geometric logic gate in cavity QED [J].

Chen, CY ;

Feng, M ;

Zhang, XL ;

Gao, KL .

PHYSICAL REVIEW A, 2006, 73 (03)

[2] Continuous-variable quantum teleportation through lossy channels -: art. no. 022310 [J].

Chizhov, AV ;

Knöll, L ;

Welsch, DG .

PHYSICAL REVIEW A, 2002, 65 (02) :1-9

[3] UNIVERSALITY IN QUANTUM COMPUTATION [J].

DEUTSCH, D ;

BARENCO, A ;

EKERT, A .

PROCEEDINGS OF THE ROYAL SOCIETY-MATHEMATICAL AND PHYSICAL SCIENCES, 1995, 449 (1937) :669-677

[4] Experimental implementation of high-fidelity unconventional geometric quantum gates using an NMR interferometer [J].

Du, Jiangfeng ;

Zou, Ping ;

Wang, Z. D. .

PHYSICAL REVIEW A, 2006, 74 (02)

[5] Perturbative expansions for the fidelities and spatially correlated dissipation of quantum bits [J].

Duan, LM ;

Guo, GC .

PHYSICAL REVIEW A, 1997, 56 (06) :4466-4470

[6] Geometric manipulation of trapped ions for quantum computation [J].

Duan, LM ;

Cirac, JI ;

Zoller, P .

SCIENCE, 2001, 292 (5522) :1695-1697

[7] Detection of geometric phases in superconducting nanocircuits [J].

Falci, G ;

Fazio, R ;

Palma, GM ;

Siewert, J ;

Vedral, V .

NATURE, 2000, 407 (6802) :355-358

[8] Gain tuning and fidelity in continuous-variable quantum teleportation [J].

Ide, T ;

Hofmann, HF ;

Furusawa, A ;

Kobayashi, T .

PHYSICAL REVIEW A, 2002, 65 (06) :7

[9] Geometric quantum computation using nuclear magnetic resonance [J].

Jones, JA ;

Vedral, V ;

Ekert, A ;

Castagnoli, G .

NATURE, 2000, 403 (6772) :869-871

[10] FIDELITY FOR MIXED QUANTUM STATES [J].

JOZSA, R .

JOURNAL OF MODERN OPTICS, 1994, 41 (12) :2315-2323

← 1 2 3 →