Abstract
We propose a nanodevice for single-electron spin initialization. It is based on a gated planar semiconductor heterostructure with a quantum well and with potentials generated by voltages applied to local gates. Initially we insert an electron with arbitrary spin into the nanodevice. Next we perform a sequence of spin manipulations, after which the spin is set in a desired direction (e.g., the growth direction). The operations are done all-electrically, do not require any external fields and do not depend on the initial spin direction.
Highlights
We propose a nanodevice for single-electron spin initialization
In quantum dots (QD), in which confinement is created by heterojunctions of semiconductors, spin can be controlled with photons
Spin can be initialized in QDs formed by heterojunctions in catalytically grown nanowires [23]
Summary
We propose a nanodevice for single-electron spin initialization. It is based on a gated planar semiconductor heterostructure with a quantum well and with potentials generated by voltages applied to local gates. In this work we propose a nanodevice capable of initializing spin of a single electron using exclusively the electric field. In the first stage we separate the electron wavepacket into two parts of opposite spins (parallel to the y-axis in the left half of the nanodevice and antiparallel in the right).
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