Diamond defect-based sensing of programmably patterned molecular spin arrays with single-spin sensitivity

ORAL

Abstract

The assembly of solid-state spins with controlled nanoscale spatial precision is an outstanding challenge in quantum technologies. Here we combine a DNA-based patterning technique with nitrogen-vacancy (NV) quantum sensors in diamond to sense 2D arrays of molecular spins programmably patterned via a monolayer of DNA origami on a diamond surface. We control the spacing of chelated Gd3+ spins down to 6 nm precision and verify this control by observing a linear relationship between proximal NVs’ T1 relaxation rate, and the designated number of Gd3+ spins per origami unit. We confirm the preservation of the charge state and spin coherence of the proximal, shallow NV centers and discuss ongoing work towards probing ordered, strongly interacting 2D spin networks on the diamond surface.

* This work was supported by the U.S. DOD, division of Defense Research and Engineering, under award No. W911NF-20-1-0230 and Q-NEXT (Grant No. DOE 1F-60579), a U.S. DOE Office of Science National Quantum Information Science Research Centers.

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Presenters

  • Zhiran Zhang

    University of California, Santa Barbara

Authors

  • Zhiran Zhang

    University of California, Santa Barbara

  • Taylor Morrison

    University of California, Santa Barbara

  • Lillian Hughes

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

  • Ruiyao Liu

    University of California, Santa Barbara

  • Deborah K Fygenson

    University of California, Santa Barbara, UC Santa Barbara

  • Ania C Bleszynski Jayich

    University of California, Santa Barbara