All-Electrical Control of a Hybrid Electron Spin/Valley Quantum Bit in SOI CMOS Technology

Leo Bourdet, Louis Hutin, Benoit Bertrand, Andrea Corna, Heorhii Bohuslavskyi, Anthony Amisse, Alessandro Crippa, Romain Maurand, BARRAUD Sylvain, Matias Urdampilleta, Christopher Bauerle, Tristan Meunier, marc sanquer, xavier jehl, Silvano De Franceschi, Yann-Michel Niquet, Maud Vinet

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)

Abstract

We fabricated quantum dot devices using a standard SOI CMOS process flow and demonstrated that the spin of confined electrons could be controlled via a local electrical-field excitation, owing to intervalley spin-orbit coupling. We discuss that modulating the confinement geometry via an additional electrode may enable switching a quantum bit (qubit) between an electrically addressable valley configuration and a protected spin configuration. This proposed scheme bears relevance to improve the tradeoff between fast operations and slow decoherence for quantum computing on a Si qubit platform. Finally, we evoke the impact of process-induced variability on the operating bias range.
Original languageEnglish
Pages (from-to)5151-5156
Number of pages6
JournalIEEE Transactions on Electron Devices
Volume65
Issue number11
DOIs
Publication statusPublished - Nov 2018
MoE publication typeA1 Journal article-refereed

Keywords

  • CMOS
  • quantum bit (qubit)
  • quantum information
  • spins

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