Experimental realization of noiseless subsystems for quantum information processing

被引：192

作者：

Viola, L

Fortunato, EM

Pravia, MA

Knill, E

Laflamme, R

Cory, DG

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

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

来源：

SCIENCE | 2001年 / 293卷 / 5537期

关键词：

D O I：

10.1126/science.1064460

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We demonstrate the protection of one bit of quantum information against all collective noise in three nuclear spins. Because no subspace of states offers this protection, the quantum bit was encoded in a proper noiseless subsystem. We therefore realize a general and efficient method for protecting quantum information. Robustness was verified for a full set of noise operators that do not distinguish the spins. Verification relied on the most complete exploration of engineered decoherence to date. The achieved fidelities show improved information storage for a large, noncommutative set of errors.

引用

页码：2059 / 2063

页数：5

共 31 条

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