Decoherence suppression for oscillator-assisted geometric quantum gates via symmetrization

被引：4

作者：

Cen, LX

Zanardi, P

机构：

[1] Inst Sci Interchange Fdn, I-10133 Turin, Italy

[2] MIT, Dept Mech Engn, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW A | 2005年 / 71卷 / 06期

关键词：

D O I：

10.1103/PhysRevA.71.060307

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a symmetrization procedure to beat decoherence for oscillator-assisted quantum gate operations. The enacted symmetry is related to the global geometric features of qubits transformation based on ancillary oscillator modes, e.g., phonons in an ion-trap system. It is shown that the devised multicircuit symmetrized evolution endows the system with a twofold resilience against decoherence: insensitivity to thermal fluctuations and quantum dissipation.

引用

收藏

页数：4

相关论文

共 32 条

[1] Quantum information and computation [J].

Bennett, CH ;

DiVincenzo, DP .

NATURE, 2000, 404 (6775) :247-255

[2] QUANTUM COMPUTATIONS WITH COLD TRAPPED IONS [J].

CIRAC, JI ;

ZOLLER, P .

PHYSICAL REVIEW LETTERS, 1995, 74 (20) :4091-4094

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

Duan, LM ;

Cirac, JI ;

Zoller, P .

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

[4] Preserving coherence in quantum computation by pairing quantum bits [J].

Duan, LM ;

Guo, GC .

PHYSICAL REVIEW LETTERS, 1997, 79 (10) :1953-1956

[5] Speed optimized two-qubit gates with laser coherent control techniques for ion trap quantum computing -: art. no. 157901 [J].

García-Ripoll, JJ ;

Zoller, P ;

Cirac, JI .

PHYSICAL REVIEW LETTERS, 2003, 91 (15) :157901-157901

[6] Class of quantum error-correcting codes saturating the quantum Hamming hound [J].

Gottesman, D .

PHYSICAL REVIEW A, 1996, 54 (03) :1862-1868

[7] Fast quantum gates for cold trapped ions [J].

Jonathan, D ;

Plenio, MB ;

Knight, PL .

PHYSICAL REVIEW A, 2000, 62 (04) :10

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

Jones, JA ;

Vedral, V ;

Ekert, A ;

Castagnoli, G .

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

[9] Theory of quantum error-correcting codes [J].

Knill, E ;

Laflamme, R .

PHYSICAL REVIEW A, 1997, 55 (02) :900-911

[10] Theory of quantum error correction for general noise [J].

Knill, E ;

Laflamme, R ;

Viola, L .

PHYSICAL REVIEW LETTERS, 2000, 84 (11) :2525-2528

← 1 2 3 4 →