Engineering low-dimensional spin systems in diamond for many-body physics

ORAL

Abstract

Spinful defects in diamond are a promising platform for studying positionally disordered, many-body interacting spin systems. Confining these defects to lower dimensions has garnered increasing interest for entanglement enhanced sensing and simulation. Engineering low dimensional spin systems, i.e. hybrid spin systems of substitutional nitrogen defects (P1 centers) and nitrogen-vacancy centers (NV centers), has recently been achieved via delta doping during diamond growth. Here we present a technique to confine hybrid NV and P1 centers laterally within a 2D delta-doped layer to generate 1D spins systems. We infer and verify their dimensionality with nanoscale materials characterization and decoherence-based quantum sensing techniques. Generating such low dimensional spin systems opens avenues for studying disordered 1D interacting spin systems.

*We gratefully acknowledge the support of the Army Research Office through the MURI program Grant No. W911NF-20-1-0136, the UCSB Quantum Foundry through Q-AMASE-i program (NSF DMR-1906325), U.S. Department of Energy BES Grant No. DE-SC0019241, and the NSF QLCI program through Grant No. OMA-2016245. S.P. acknowledges support from the Department of Defense (DoD) through the National Defense Science and Engineering Graduate (NDSEG) Fellowship Program. L.B.H.W. acknowledges support from the NSF Graduate Research Fellowship Program (DGE 2139319)  

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Publication: Two-dimensional spin systems in PECVD-grown diamond with tunable density and long coherence for enhanced quantum sensing and simulation APL Mater. 11, 021101 (2023); Probing many-body dynamics in a two-dimensional dipolar spin ensemble Nature Physics volume 19, pages 836–844 (2023)

Presenters

  • Lingjie Chen

    • University of California, Santa Barbara

Authors

  • Lingjie Chen

    • University of California, Santa Barbara

  • Shreyas Parthasarathy

    • University of California, Santa Barbara
    • University of California Santa Barbara

  • Simon Alexander Meynell

    • Simon Fraser University

  • Lillian B Hughes-Wyatt

    • University of California, Santa Barbara

  • Eveline Postelnicu

    • Stanford University

  • Haopu Yang

    • Harvard University

  • Zilin Wang

    • Harvard University

  • Weijie Wu

    • Harvard University

  • Winston Peloso

    • University of California, Santa Barbara

  • Casey K Kim

    • University of California Santa Barbara
    • University of California, Santa Barbara

  • Norman Y Yao

    • Harvard University

  • Kunal Mukherjee

    • Stanford University

  • Ania Claire Jayich

    • University of California, Santa Barbara