Coherence generation and population transfer in a three-level ladder system

被引：0

作者：

张冰 ^{[1
,2
,3
,4
]}

姜云 ^{[1
,2
]}

王刚 ^{[1
,2
]}

张理达 ^{[1
,2
]}

吴金辉 ^{[1
,2
]}

高锦岳 ^{[1
,2
]}

机构：

[1] College of Physics,Jilin University

[2] Key Laboratory of Coherent Light and Atomic and Molecular Spectroscopy of Educational Ministry

[3] College of Physics and Electronic Engineering,Mudanjiang Teachers' College

[4] Heilongjiang Superhard Materials Key Laboratory

来源：

Chinese Physics B | 2011年 / 20卷 / 05期

基金：

中国国家自然科学基金;

关键词：

coherence; population transfer; spontaneous decay;

D O I：

暂无

中图分类号：

O562 [原子物理学]; O431.2 [量子光学];

学科分类号：

070203 ; 070207 ; 0803 ; 1406 ;

摘要：

This work explores the effect of spontaneous emission on coherence generation and population transfer in a threelevel ladder atomic system driven by two pulses in counterintuitive order.With adiabatic evolution and the weakdephasing approximation,we find that a large coherence and population transfer can be achieved even with spontaneous decay rate.The maximum coherence and population transfer decrease with the increase of spontaneous decay rate from the highest state to intermediate state.But this effect can be compensated by shortening the pulse width and enlarging the delay time.Results show that the coherence generation and population transfer never depend on the spontaneous decay rate from the intermediate state to ground state.The validity of the analytic solution is examined by numerical calculation.

引用

页码：58 / 64

页数：7