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arXiv · 1612.08389

Spin-selective electron transfer in quantum dot array

Shumpei Masuda·Kuan Yen Tan·Mikio Nakahara
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Abstract

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.

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Shumpei Masuda, Kuan Yen Tan, Mikio Nakahara. 2017-11-20. Spin-selective electron transfer in quantum dot array. https://doi.org/10.1103/physrevb.97.045418

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