期刊
APPLIED PHYSICS LETTERS
卷 90, 期 22, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.2743750
关键词
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资金
- Engineering and Physical Sciences Research Council [GR/S96418/01] Funding Source: researchfish
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.
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