Preservation of quantum states via a super-Zeno effect on ensemble quantum computers

被引：2

作者：

Ren Ting-Ting ^{[1
,2
,3
]}

Luo Jun ^{[1
,2
]}

Sun Xian-Ping ^{[1
,2
]}

Zhan Ming-Sheng ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China

[2] Chinese Acad Sci, Ctr Cold Atom Phys, Wuhan 430071, Peoples R China

[3] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

来源：

CHINESE PHYSICS B | 2009年 / 18卷 / 11期

基金：

中国国家自然科学基金;

关键词：

quantum information; decoherence; Zeno effect; quantum state preservation; DECOHERENCE;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Following a recent proposal by Dhar et al (2006 Phys. Rev. Lett. 96 100405), we demonstrate experimentally the preservation of quantum states in a two-qubit system based on a super-Zeno effect using liquid-state nuclear magnetic resonance techniques. Using inverting radiofrequency pulses and delicately selecting time intervals between two pulses, we suppress the effect of decoherence of quantum states. We observe that preservation of the quantum state vertical bar 11 > with the super-Zeno effect is three times more efficient than the ordinary one with the standard Zeno effect.

引用

页码：4711 / 4715

页数：5

共 28 条

[1]

Quantum information and computation [J].