Decoherence of donors in silicon at millikelvin temperatures

ORAL

Abstract

Donors in silicon are model spin systems [1] and potential candidates for implementing solid-state quantum bits. In that perspective, a detailed understanding of their coherence properties is needed. I will present measurements of Bismuth donors spin relaxation and coherence times at millikelvin temperatures obtained with a home-made spectrometer working at the quantum limit of sensitivity based on superconducting micro-resonators and Josephson parametric amplifiers [2], and I will discuss the various mechanisms at play.
[1] G. Feher, Phys. Rev. 114, 1219 (1959)
[2] A. Bienfait et al., Nature Nanotechnology 11, 253 (2016)

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Presenters

  • Patrice Bertet

    Quantronics, SPEC, CEA-Saclay, Quantronics, SPEC, CEA-Saclay, France, Quantronics group, Université Paris-Saclay, CEA-Saclay

Authors

  • Patrice Bertet

    Quantronics, SPEC, CEA-Saclay, Quantronics, SPEC, CEA-Saclay, France, Quantronics group, Université Paris-Saclay, CEA-Saclay

  • Vishal Ranjan

    Quantronics, SPEC, CEA-Saclay, CEA-Saclay

  • Bartolo Albanese

    Quantronics, SPEC, CEA-Saclay, Quantronics, SPEC, CEA-Saclay, France, CEA-Saclay

  • Sebastian Probst

    Quantronics, SPEC, CEA-Saclay, France, CEA-Saclay

  • Gengli Zhang

    Chinese University of Hong Kong, Physics, The Chinese University of Hong Kong, The Chinese University of HongKong

  • Emmanuel Flurin

    Quantronics, SPEC, CEA-Saclay, Quantronics, CEA Saclay, Quantronics, SPEC, CEA-Saclay, France, CEA-Saclay

  • Denis Vion

    Quantronics, SPEC, CEA-Saclay, Quantronics, SPEC, CEA-Saclay, France, CEA-Saclay

  • Daniel Esteve

    Quantronics, SPEC, CEA-Saclay, Quantronics, SPEC, CEA-Saclay, France, CEA-Saclay

  • Ren-Bao Liu

    Chinese University of Hong Kong, Department of Physics, The Chinese University of Hong Kong, Physics, The Chinese University of Hong Kong, The Chinese University of HongKong

  • John Morton

    University College London, London Centre for Nanotechnology, University College London, UK, London Centre for Nanotechnology, University College London, UCL London