Dissipation-assisted quantum computation in atom-cavity systems

被引：8

作者：

Beige, A ^{[1
]}

Cable, H ^{[1
]}

Knight, PL ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BW, England

来源：

FLUCTUATIONS AND NOISE IN PHOTONICS AND QUANTUM OPTICS | 2003年 / 5111卷

关键词：

quantum information processing; quantum jumps; cavity QED;

D O I：

10.1117/12.497004

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The principal obstacle to quantum information processing with many qubits is decoherence. One source of decoherence is spontaneous emission which causes loss of energy and information. Inability to control system parameters with high precision is another possible source of error. Strategies aimed at overcoming one kind of error typically increase sensitivity to others. As a solution we propose quantum computing with dissipation-assisted quantum gates. These can be run relatively fast while achieving fidelities close to one. The success rate of each gate operation can, at least in principle, be arbitrary close to one.

引用

页码：370 / 381

页数：12

共 42 条

[1] Projection postulate and atomic quantum Zeno effect [J].

Beige, A ;

Hegerfeldt, GC .

PHYSICAL REVIEW A, 1996, 53 (01) :53-65

[2] Dissipation-assisted quantum gates with cold trapped ions [J].

Beige, A .

PHYSICAL REVIEW A, 2003, 67 (02) :4

[3] Driving atoms into decoherence-free states [J].

Beige, A ;

Braun, D ;

Knight, PL .

NEW JOURNAL OF PHYSICS, 2000, 2 :221-2215

[4] Quantum computing using dissipation to remain in a decoherence-free subspace [J].

Beige, A ;

Braun, D ;

Tregenna, B ;

Knight, PL .

PHYSICAL REVIEW LETTERS, 2000, 85 (08) :1762-1765

[5]

CARMICHAEL HJ, 1993, LECT NOTES PHYSICS, V18

[6] WHAT ARE QUANTUM JUMPS [J].

COOK, RJ .

PHYSICA SCRIPTA, 1988, T21 :49-51

[7] WAVE-FUNCTION APPROACH TO DISSIPATIVE PROCESSES IN QUANTUM OPTICS [J].

DALIBARD, J ;

CASTIN, Y ;

MOLMER, K .

PHYSICAL REVIEW LETTERS, 1992, 68 (05) :580-583

[8]

DEHMELT H, 1975, B AM PHYS SOC, V20, P60

[9] QUANTUM-THEORY, THE CHURCH-TURING PRINCIPLE AND THE UNIVERSAL QUANTUM COMPUTER [J].

DEUTSCH, D .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1985, 400 (1818) :97-117

[10] Optimal quantum codes for preventing collective amplitude damping [J].

Duan, LM ;

Guo, GC .

PHYSICAL REVIEW A, 1998, 58 (05) :3491-3495

← 1 2 3 4 5 →