Macroscopically distinct quantum-superposition states as a bosonic code for amplitude damping

被引：360

作者：

Cochrane, PT ^{[1
]}

Milburn, GJ ^{[1
]}

Munro, WJ ^{[1
]}

机构：

[1] Univ Queensland, Dept Phys, St Lucia, Qld 4072, Australia

来源：

PHYSICAL REVIEW A | 1999年 / 59卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.59.2631

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We show how macroscopically distinct quantum superposition states (Schrodinger cat states) may be used as logical qubit encodings for the correction of spontaneous emission errors. Spontaneous emission causes a bit flip error, which is easily corrected by a standard error correction circuit. The method works arbitrarily well as the distance between the amplitudes of the superposed coherent states increases. [S1050-2947(99)06503-8].

引用

页码：2631 / 2634

页数：4

共 13 条

[1]

[Anonymous], P 5 PHYS SUMM SCH AT

[2]

Bennett CH, 1996, PHYS REV A, V54, P3824, DOI 10.1103/PhysRevA.54.3824

[3] Perfect quantum-error-correction coding in 24 laser pulses [J].

Braunstein, SL ;

Smolin, JA .

PHYSICAL REVIEW A, 1997, 55 (02) :945-950

[4]

BUZEK V, 1995, PROGR OPTICS, V34

[5] Bosonic quantum codes for amplitude damping [J].

Chuang, IL ;

Leung, DW ;

Yamamoto, Y .

PHYSICAL REVIEW A, 1997, 56 (02) :1114-1125

[6] Quantum nondemolition measurement of the motional energy of a trapped atom [J].

deMatos, RL ;

Vogel, W .

PHYSICAL REVIEW LETTERS, 1996, 76 (24) :4520-4523

[7] Quantum computation and Shor's factoring algorithm [J].

Ekert, A ;

Jozsa, R .

REVIEWS OF MODERN PHYSICS, 1996, 68 (03) :733-753

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

Knill, E ;

Laflamme, R .

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

[9] Perfect quantum error correcting code [J].

Laflamme, R ;

Miquel, C ;

Paz, JP ;

Zurek, WH .

PHYSICAL REVIEW LETTERS, 1996, 77 (01) :198-201

[10] A ''Schrodinger cat'' superposition state of an atom [J].

Monroe, C ;

Meekhof, DM ;

King, BE ;

Wineland, DJ .

SCIENCE, 1996, 272 (5265) :1131-1136

← 1 2 →