Contrast in transmission spectroscopy of a single quantum dot

B. D. Gerardot, S. Seidl, P. A. Dalgarno, R. J. Warburton, M. Kroner, K. Karrai, A. Badolato, P. M. Petroff

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Abstract

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 ~2000 Hz-12, 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. © 2007 American Institute of Physics.

Original languageEnglish
Article number221106
Pages (from-to)-
Number of pages3
JournalApplied Physics Letters
Volume90
Issue number22
DOIs
Publication statusPublished - 28 May 2007

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    Gerardot, B. D., Seidl, S., Dalgarno, P. A., Warburton, R. J., Kroner, M., Karrai, K., Badolato, A., & Petroff, P. M. (2007). Contrast in transmission spectroscopy of a single quantum dot. Applied Physics Letters, 90(22), -. [221106]. https://doi.org/10.1063/1.2743750