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Ultra-narrow inhomogeneous spectral distribution of telecom-wavelength vanadium centres in isotopically-enriched silicon carbide

Author

Listed:
  • Pasquale Cilibrizzi

    (SUPA, Heriot-Watt University)

  • Muhammad Junaid Arshad

    (SUPA, Heriot-Watt University)

  • Benedikt Tissot

    (University of Konstanz)

  • Nguyen Tien Son

    (Linköping University)

  • Ivan G. Ivanov

    (Linköping University)

  • Thomas Astner

    (Austrian Academy of Sciences)

  • Philipp Koller

    (Austrian Academy of Sciences)

  • Misagh Ghezellou

    (Linköping University)

  • Jawad Ul-Hassan

    (Linköping University)

  • Daniel White

    (SUPA, Heriot-Watt University)

  • Christiaan Bekker

    (SUPA, Heriot-Watt University)

  • Guido Burkard

    (University of Konstanz)

  • Michael Trupke

    (Austrian Academy of Sciences)

  • Cristian Bonato

    (SUPA, Heriot-Watt University)

Abstract

Spin-active quantum emitters have emerged as a leading platform for quantum technologies. However, one of their major limitations is the large spread in optical emission frequencies, which typically extends over tens of GHz. Here, we investigate single V4+ vanadium centres in 4H-SiC, which feature telecom-wavelength emission and a coherent S = 1/2 spin state. We perform spectroscopy on single emitters and report the observation of spin-dependent optical transitions, a key requirement for spin-photon interfaces. By engineering the isotopic composition of the SiC matrix, we reduce the inhomogeneous spectral distribution of different emitters down to 100 MHz, significantly smaller than any other single quantum emitter. Additionally, we tailor the dopant concentration to stabilise the telecom-wavelength V4+ charge state, thereby extending its lifetime by at least two orders of magnitude. These results bolster the prospects for single V emitters in SiC as material nodes in scalable telecom quantum networks.

Suggested Citation

  • Pasquale Cilibrizzi & Muhammad Junaid Arshad & Benedikt Tissot & Nguyen Tien Son & Ivan G. Ivanov & Thomas Astner & Philipp Koller & Misagh Ghezellou & Jawad Ul-Hassan & Daniel White & Christiaan Bekk, 2023. "Ultra-narrow inhomogeneous spectral distribution of telecom-wavelength vanadium centres in isotopically-enriched silicon carbide," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-43923-7
    DOI: 10.1038/s41467-023-43923-7
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