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Quantum Leti: computing

Published on 13 November 2018


Quantum Leti: computing

Leti is supporting the roadmap towards building a quantum processor based on Si quantum bits.

The CEA has unique knowledge in quantum properties of silicon nanodevices, and the teams based in Grenoble recently announced breakthroughs towards large-scale fabrication of qubits, the elementary bricks of future quantum processors. They demonstrated on a 300 mm industrial-scale research and development facility that silicon CMOS technology can be leveraged to create qubits and they fabricated isotopically 28Si substrates to further benefit from intrinsic coherence properties of silicon. The CEA teams in coordination with the CNRS Neel Institute have gathered unique skills to focus on quantum computing in their Quantum Silicon Group.

To support such Si quantum computing developments, the CEA relies on its advanced Silicon-CMOS research and development facility with globally recognised expertise in developing innovative new integrated circuits in partnership with industrial companies


                                                                              schematics of a large scale quantum computer architecture

Most relevant publications

  • Benoit Voisin, Viet Nguyen, Julien Renard, Xavier Jehl, Sylvain Barraud, François Triozon, Maud Vinet, Yvan Duchemin, Yann-Michel Niquet, Silvano De Franceschi, Marc Sanquer, « Few-Electron Edge-State Quantum Dots in a Silicon Nanowire Field-Effect Transistor » Nanoletters March 2014

  • Y.-M. Niquet, I. Duchemin, V.-H. Nguyen, F. Triozon, and D.Rideau, "Remote surface roughness scattering in fully depleted silicon-on-insulator devices with high-κ/SiO2 gate stacks", Applied Physics Letters 106, 023508 (2015).

  • Level spectrum and charge relaxation in a silicon double quantum dot probed by dual-gate reflectometry Alessandro Crippa, Romain Maurand, Dharmraj Kotekar-Patil, Andrea Corna, Heorhii Bohuslavskyi, Alexei O. Orlov, Patrick Fay, Romain Laviéville, Silvain Barraud, Maud Vinet, Marc Sanquer, Silvano De Franceschi, Xavier Jehl Nanoletters 2017 DOI: 10.1021/acs.nanolett.6b04354
  • A CMOS silicon spin qubit, R. Maurand, X. Jehl, D. Kotekar Patil, A. Corna, H. Bohuslavskyi, R. Laviéville, L. Hutin, S. Barraud, M. Vinet, M. Sanquer, S. De Franceschi Nature Communications 7, Article number: 13575 (2016)


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Video: The Quantum computer (in french)

VideoL'ordinateur quantique

Production Universcience.TV