Oral: Programmable formation of telecom band quantum emitters in silicon

ORAL

Abstract

Silicon-based quantum emitters are candidates for large-scale qubit integration due to their single-photon emission properties and potential for spin-photon interfaces with long spin coherence times. Here, we demonstrate local writing and erasing of selected light-emitting defects using fs laser pulses in combination with hydrogen-based defect activation and passivation. By selecting forming gas (N2/H2) during thermal annealing of carbon-implanted silicon, we form Ci centers while passivating the more common G-centers. The Ci center is a telecom S-band emitter with very promising spin properties that consists of a single interstitial carbon atom in the silicon lattice. Density functional theory calculations show that the Ci center brightness is enhanced by several orders of magnitude in the presence of hydrogen. Fs-laser pulses locally affect the passivation or activation of quantum emitters with hydrogen and enable programmable quantum emitter formation in a qubit-by-design paradigm.

* This work was supported by the Office of Science, Office of Fusion Energy Sciences, of the U.S.Department of Energy, under Contract No. DE-AC02-05CH11231. L. Z. T. and V. I. were supported by the Molecular Foundry, a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. This research used resources of the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.

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Presenters

  • Kaushalya Jhuria

    Lawrence Berkeley National Laboratory

Authors

  • Kaushalya Jhuria

    Lawrence Berkeley National Laboratory

  • Vsevolod Ivanov

    Lawrence Berkeley National Lab, Virginia Tech

  • Debanjan Polley

    Lawrence Berkeley National Laboratory

  • Wei Liu

    Accelerator Technology and A, Lawrence Berkeley National Lab

  • Arun Persaud

    Lawrence Berkeley National Laboratory

  • Yertay Zhiyenbayev

    University of California, Berkeley

  • Walid Redjem

    University of California Berkeley

  • Wayesh Qarony

    University of California, Berkeley

  • Prabin Parajuli

    University of California, Merced, Berkeley lab

  • Qing Ji

    Lawrence Berkeley National Laboratory

  • Anthony J Gonsalves

    Lawrence Berkeley National Laboratory

  • Jeffrey Bokor

    University of California

  • Liang Z Tan

    Lawrence Berkeley National Laboratory

  • Boubacar Kante

    University of California, Berkeley

  • Thomas Schenkel

    Lawrence Berkeley National Laboratory