四能级原子系统中光脉冲的亚光速和超光速传播

四能级原子系统中光脉冲的亚光速和超光速传播

徐天赋¹,², 苏雪梅¹

1. 吉林大学物理学院, 长春 130021; 2. 燕山大学理学院, 河北省秦皇岛 066004

收稿日期:2005-10-24 修回日期:1900-01-01 出版日期:2006-07-26 发布日期:2006-07-26
通讯作者: 苏雪梅

Subluminal and Superluminal Light Pulse in a Four Level System

XU Tian fu¹,², SU Xue mei¹

1. College of Physics, Jilin University, Changchun 130021, China; 2. College of Science, Yanshan University, Qinhuangdao 066004, Hebei Province, China

Received:2005-10-24 Revised:1900-01-01 Online:2006-07-26 Published:2006-07-26
Contact: SU Xue mei

摘要/Abstract

摘要： 提出在一个四能级原子系统中, 通过控制外加微波场的强度, 实现光脉冲的亚光速和超光速传播的理论模型. 分析了两个上能级间隔对光场群速度的影响, 并比较了四能级系统与三能级Λ系统之间的差异. 

关键词: 量子相干, 亚光速, 超光速, 零吸收

Abstract: A scheme was proposed to realize subluminal and superluminal propagation for the probe field by controlling the strength of a microwave field in a four-level system at zero-absorption. The effect of the energy-level difference between the two upper superfine levels on the group velocity of the probe field was analyzed. The results between Λ-type three-level and the four-level system were compared. 

Key words: uantum coherence, subluminal, superluminal, zero-absorption

中图分类号:

O431.2

徐天赋,, 苏雪梅. 四能级原子系统中光脉冲的亚光速和超光速传播[J]. J4, 2006, 44(04): 621-624.

XU Tian fu,, SU Xue mei. Subluminal and Superluminal Light Pulse in a Four Level System[J]. J4, 2006, 44(04): 621-624.

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