B. D. Gerardot, S. Seidl, P. A. Dalgarno, M. Kroner, K. Karrai, A. Badolato, P. M. Petroff, R. J. Warburton
Published 2007-01-25Version 1
We perform transmission spectroscopy on single quantum dots and examine the effects of a resident carriers spin, the incident laser spot size, polarization, and power on the experimental contrast. We demonstrate a factor of 4 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-1/2, which will allow for MHz detection frequencies. We anticipate that this improvement will allow further investigation of spectral fluctuation and open up the feasibility for an all-optical read-out of an electron spin in a quantum dot.
Nuclear spin polarization in a single quantum dot pumped by two laser beams
Polarization-Correlated Photon Pairs from a Single Quantum Dot
Voltage-controlled electron-hole interaction in a single quantum dot
