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Classical information transfer between distant quantum dots using individual electrons in fast moving quantum dots
Author(s) -
Hermelin Sylvain,
Bertrand Benoit,
Takada Shintaro,
Yamamoto Michihisa,
Tarucha Seigo,
Ludwig Arne,
Wieck Andreas D.,
Bäuerle Christopher,
Meunier Tristan
Publication year - 2017
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201600673
Subject(s) - quantum dot , electron , physics , spin (aerodynamics) , quantum imaging , quantum , quantum point contact , quantum technology , spin engineering , quantum sensor , quantum information , quantum dot laser , open quantum system , quantum mechanics , condensed matter physics , spin polarization , quantum well , laser , thermodynamics
Abstract Over the past two decades, lateral quantum dots have permitted a tremendous advancement in the manipulation of individual electrons. In order to have a complete toolbox for electronics at the single electron level, local manipulation in a quantum dot needs to be associated with the controlled transport of individual electrons. Here, we review results on the transfer of individual electrons and their spin degree of freedom between distant lateral quantum dots. The electron is transported in a surface acoustic wave‐generated moving quantum dot, with an efficiency of 92%. Furthermore, we will review recent results showing that classical spin information/magnetization can be partially transferred using this method. The fidelity was proven to be limited by the current sample design and implementation, and no fundamental limitation was met. This transfer capability opens new avenues in spin‐based quantum information processing and in the implementation of quantum optics experiments with flying electrons.