报告时间：2018年4月13日下午4点

报告地点：近代物理系210会议室

报告人： 日本近畿大学 中原干夫教授

报告题目：Spin-selective electron transfer in a quantum dot array

报告摘要：We propose a spin-selective coherent electron transfer in a silicon quantum dot array. Oscillating magnetic fields and temporally controlled gate voltages are utilized to separate the electron wave function into different quantum dots depending on the spin state.We introduce a nonadiabatic protocol based on $pi$-pulses and an adiabatic protocol which offer fast electron transfer and robustness against the error in the control-field pulse area, respectively. We also study a shortcut-to-adiabaticity protocol which compromises these two protocols.

We show that this scheme can be extended to multielectron systems straightforwardly and used for nonlocal manipulations of electrons.

This work is done in collaboration with Shumpei Masuda and Kuan Yen Tan.

Reference: Phys. Rev. B 97, 045418 (2018).