Coherent Control of Semiconductor Quantum Wire by High-Resolution and Stable Michelson Interferometer

Abstract

We developed a high-resolution Michelson interferometer in order to stabilize the relative phase of double pulses by using a He-Ne two-frequency laser positioning system. Very stable phase-locked pulse pair whose phase difference was only 4 degree at 900nm was realized.Using a high-resolution Michelson interferometer, we demonstrated coherent control of an exciton in a GaAs/AlGaAs crescent-shaped quantum wire. The dephasing time of the single quantum wire was 400fs.