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

doi:10.1063/1.2743750

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

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

44 Citations (Scopus)

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 language	English
Article number	221106
Pages (from-to)	-
Number of pages	3
Journal	Applied Physics Letters
Volume	90
Issue number	22
DOIs	https://doi.org/10.1063/1.2743750
Publication status	Published - 28 May 2007

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AU - Gerardot, B. D.

AU - Seidl, S.

AU - Dalgarno, P. A.

AU - Warburton, R. J.

AU - Kroner, M.

AU - Karrai, K.

AU - Badolato, A.

AU - Petroff, P. M.

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N2 - 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.

AB - 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.

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Contrast in transmission spectroscopy of a single quantum dot

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