Giant vacuum-field Rabi splitting of intersubband transitions in multiple quantum wells

被引：28

作者：

Dupont, E. ^{[1
]}

Gupta, J. A. ^{[1
]}

Liu, H. C. ^{[1
]}

机构：

[1] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada

来源：

PHYSICAL REVIEW B | 2007年 / 75卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.75.205325

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A large, 42 meV, vacuum-field Rabi splitting was observed between the upper and lower intersubband polariton branches of a moderately n-doped GaAs-AlGaAs multiple quantum well sample. For this structure, the Rabi energy represents 17% of the bare intersubband resonance, a situation corresponding to the ultrastrong coupling regime between the photon and intersubband excitations. A different phenomenon is also demonstrated: the occurrence of a higher mode polariton. The large tunability of the intersubband absorption with carrier concentration may lead to new optoelectronic devices.

引用

页数：5

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