Vacuum Rabi coupling enhancement and Zeeman splitting in semiconductor quantum microcavity structures in a high magnetic field

被引：58
|
作者：
Fisher, TA [1 ]
Afshar, AM [1 ]
Skolnick, MS [1 ]
Whittaker, DM [1 ]
Roberts, JS [1 ]
机构：
[1] UNIV SHEFFIELD,DEPT ELECT & ELECTR ENGN,SHEFFIELD S1 3DU,S YORKSHIRE,ENGLAND
来源：
PHYSICAL REVIEW B | 1996年 / 53卷 / 16期
关键词：
D O I：
10.1103/PhysRevB.53.R10469
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Reflectivity spectra of high-quality quantum microcavity structures are investigated in high magnetic fields from 0 to 14 T. Over this field range we observe an increase in the vacuum Rabi splitting by a factor of 1.4, due to the magnetic-field-induced increase of exciton oscillator strength. In addition, exciton Zeeman splitting is seen. We demonstrate that this splitting arises from the independent interaction of each exciton spin component with the corresponding circularly polarized cavity photon mode. We also report anomalous broadening of the higher-energy polariton feature in high magnetic field, raising doubts that the same broadening seen at zero magnetic field is due to coupling of the cavity mode with higher discrete and continuum exciton states.
引用
收藏
页码：10469 / 10472
页数：4
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