Contrast in transmission spectroscopy of a single quantum dot

被引：37

作者：

Gerardot, B. D. ^{[1
]}

Seidl, S.

Dalgarno, P. A.

Warburton, R. J.

Kroner, M.

Karrai, K.

Badolato, A.

Petroff, P. M.

机构：

[1] Heriot Watt Univ, Sch Engn & Phys Sci, Edinburgh EH14 4AS, Midlothian, Scotland

[2] Univ Munich, Ctr Nanosci, D-80539 Munich, Germany

[3] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 22期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1063/1.2743750

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors perform transmission spectroscopy on single quantum dots and examine the effects of a resident carrier's spin, the incident laser spot size, polarization, and power on the experimental contrast. They demonstrate a factor of 5 improvement in the maximum contrast by using a solid immersion lens to decrease the spot area. This increase yields a maximum signal to noise ratio of similar to 2000 Hz(-1/2), which will allow for megahertz detection frequencies. The authors anticipate that this improvement will allow further investigation of spectral fluctuation and open up the feasibility for an all-optical readout of an electron spin in a quantum dot. (C) 2007 American Institute of Physics.

引用

页数：3

共 14 条

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