Spin-selective electron transfer in quantum dot array

We propose a spin-selective coherent electron transfer in a silicon-quantum-dot array. Oscillating magnetic fields and temporally controlled gate voltages are utilised to separate the electron wave function into different quantum dots depending on the spin state. We introduce non-adiabatic and adiab...

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Bibliographic Details
Published in:arXiv.org 2017-11
Main Authors: Masuda, Shumpei, Kuan Yen Tan, Nakahara, Mikio
Format: Article
Language:English
Subjects:
Adiabatic flow
Electron spin
Electron transfer
Electrons
Quantum dots
Online Access:Get full text
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Summary:We propose a spin-selective coherent electron transfer in a silicon-quantum-dot array. Oscillating magnetic fields and temporally controlled gate voltages are utilised to separate the electron wave function into different quantum dots depending on the spin state. We introduce non-adiabatic and adiabatic protocols which offer fast electron transfer and the 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 multi-electron systems straightforwardly and used for non-local manipulations of the electrons.
ISSN:2331-8422
DOI:10.48550/arxiv.1612.08389