学术
基于量子干涉效应的四能级原子系统中的vacuum-induced coherence效应
陈峻[1,3] 刘正东[1,2] 郑军[2] 方慧娟[1]
[1]南昌大学近代物理研究所,南昌330031 [2]南昌大学纳米技术工程研究中心,南昌330047 [3]广东工业大学实验中心,广州510090
摘 要:
多能级系统中的vacuum-induced coherence（VIC）效应是一种重要的量子干涉效应,研究了VIC效应导致的系统电磁感应透明现象,并且改变了系统的吸收、增益和色散等性质,分析了在发生VIC效应时系统能级粒子数分布规律.另外,考虑复数拉比频率的相位变化时系统可呈现出光学双稳态效应.[著者文摘]
关 键 词:
文章出处:
《物理学报》-2007年56卷11期 -6441-6445页
栏目信息:
分 类 号:
Effect of vacuum-induced coherence in a four-level atomic system via quantum interference
Chen Jun Liu Zheng-Dong Zheng Jun Fang Hui-Juan（1.Institute of Modern Physics,Nanchang University,Nanchang 330031,China;2.Engineering Research Center for Nanotechnology,Nanchang University,Nanchang 330047,China;3.Experiment Center,Guangdong University of Technology,Guangzhou 510090,China）
Abstract:
In this paper,we report the effects of vacuum-induced coherence in a laser-driven four-level atom consisting of three near-degenerate upper levels having an additional coherence term due to interaction with the vacuum of the radiation field.We show that such coherence preserves the electromagnetically induced transparency and optical bistability phenomena.The dynamical behavior of the population distribution via vacuum-induced coherence was also analyzed numerically.[著者文摘]
Key words:
quantum interference,vacuum-induced coherence,electromagnetic induced transparency,spontaneous emission
基金资助:
国家自然科学基金（批准号：60278016和10464002）资助的课题.
更多>>免费文章
cqvip.com