Time domain optical manipulation of exciton and nuclear spin in a single self-assembled quantum dot

2006/08/07 by H. Sasakura, S. Adachi, Sasakura, H. +9
Physics and Astronomy · #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Other Condensed Matter (cond-mat.other) #Quantum and electron transport phenomena #Quantum optics and atomic interactions #Semiconductor Quantum Structures and Devices

paper · pdf · doi:10.48550/arxiv.cond-mat/0608161

openalex publication_date 2006/08/07 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We have demonstrated experimentally the manipulation of exciton and nuclear spins in a single self-assembled In_0.75Al_0.25As/Al_0.3Ga_0.7As quantum dot. The oscillation of exciton and nuclear spin polarizations were clearly observed. The switching of the emissions in Zeeman split pair indicates that the exciton pair with opposite spins was created coherently via the continuum states and that we can control the electron and nuclear spin polarizations only by changing the delay time of the cross-linearly-polarized pulses. These suggest the high potentiality of electron and nuclear spin manipulation in a single QD via the continuum state.

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