Coherent spin dynamics of rare-earth doped crystals in the high-cooperativity regime

ORAL

Abstract

We present a study into the decoherence mechanisms of rare-earth ions doped in yttrium orthosilicate (YSO). Rare-earth ions present a viable route towards quantum transduction and quantum memory devices, in this study we explore the suitability of 171Yb in the microwave domain by coupling the spins to a superconducting resonator. We outline the main sources of decoherence present in the systems and provide techniques to overcome these and extend T2 times. We explore both natural doped Yb and isotopically pure 171Yb and identify Yb isotopes with 0 nuclear spin as a major source of spectral diffusion. By utilising regions of low df/dB at high field and the zero-field clock transition we are able to extend coherence times to over 7 ms while maintaining a cooperativity of over 8 to a superconducting resonator. 

*Centre for Doctoral Training in Delivering Quantum Technologies (EP/L015242/1)

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Presenters

  • Joseph Alexander

    • London Centre for Nanotechnology, University College London

Authors

  • Joseph Alexander

    • London Centre for Nanotechnology, University College London

  • Gavin Dold

    • London Centre for Nanotechnology, University College London

  • Oscar W Kennedy

    • Imperial College London

  • James O'Sullivan

    • ETH Zurich
    • University College London

  • Mantas Šimėnas

    • London Centre for Nanotechnology, University College London

  • Christoph Zollitsch

    • London Centre for Nanotechnology

  • Sacha Welinski

    • Université PSL, Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris

  • Eloïse Lafitte-Houssat

    • Université PSL, Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris

  • Alban Ferrier

    • Chimie ParisTech, PSL University, Paris, France
    • Université PSL, Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris

  • Philippe Goldner

    • Université PSL, Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris

  • John J. L. Morton

    • University College London
    • Quantum Motion
    • UCL
    • London Centre for Nanotechnology, University College London