Enhanced Cross-Phase Modulation via Phase Control in a Quantum dot Nanostructure

被引：3

作者：

Hao Xiang-Ying ^{[1
]}

Zheng An-Shou ^{[2
]}

Wang Ying ^{[1
]}

Li Xiao-Gang ^{[1
]}

机构：

[1] Wuhan Inst Technol, Sch Sci, Wuhan 430073, Peoples R China

[2] China Univ Geosci, Sch Math & Phys, Wuhan 430074, Peoples R China

来源：

COMMUNICATIONS IN THEORETICAL PHYSICS | 2012年 / 57卷 / 05期

基金：

中国国家自然科学基金;

关键词：

cross-phase modulation (XPM); phase control; quantum dot (QD); 3RD-ORDER OPTICAL NONLINEARITIES; DEPENDENT PROPERTIES; ABSORPTION; GATE; DISPERSION;

D O I：

10.1088/0253-6102/57/5/18

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A four-level quantum dot (QD) nanostructure interacting with four fields (two weak near-infrared (NIR) pulses and two control fields) forms the well-known double-cascade configuration. We investigate the cross-phase modulation (XPM) between the two NIR pulses. The results show, in such a closed-loop scheme, that the XPM can be greatly enhanced, while the linear absorption and two-photon absorption (gain) can be efficiently depressed by tuning the relative phase among the applied fields. This protocol may have potential applications in NIR all-optical switch design and quantum information processing with the solid-state materials.

引用

页码：866 / 872

页数：7

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