Study of quantum coherence in multiple system utilizing multi single-lead quantum dots

点击翻译按钮获取中文摘要

We have demonstrated experiments relating multiple quantum systems utilizing semiconductor nano structures. We measured relaxation in quantum Hall edge states, which are important components of multiple quantum systems, with quantum point contacts and discussed about the relaxation mechanisms. We also developed a new method to detect local spin polarization in semiconductor nano structures, which is essential in spin related quantum systems, by using single-lead quantum dots and confirmed its operation. With this new method, we probed local spin polarization formed in quantum Hall edge states.