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Related Experiment Video

Updated: May 17, 2025

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
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Single tin-vacancy center in nanoscale diamond.

Masanori Fujiwara1, Masanao Ohori1, Frederick Tze Kit So1,2

  • 1Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan.

Discover Nano
|May 14, 2025
PubMed
Summary

Researchers successfully created tin-vacancy (SnV) centers in detonation nanodiamonds (DNDs). These SnV centers in DNDs show promise for quantum networks and biological sensing applications.

Keywords:
Detonation nanodiamondSingle-photon sourceTin-vacancy center

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Area of Science:

  • Materials Science
  • Quantum Physics
  • Nanotechnology

Background:

  • Group-IV color centers in diamond are key for quantum networks and biological sensing.
  • Detonation nanodiamonds (DNDs) offer potential for noninvasive cellular sensing.
  • Previous work established silicon- and germanium-vacancy centers in DNDs.

Purpose of the Study:

  • Investigate the generation of tin-vacancy (SnV) centers in detonation nanodiamonds (DNDs).
  • Explore the potential of SnV centers in DNDs for quantum and sensing applications.
  • Address challenges in creating SnV centers in ultrasmall nanodiamonds due to strain.

Main Methods:

  • Subjecting tin-doped DNDs (approx. 5 nm) to a 3-day boiling acid treatment.
  • Analyzing photoluminescence spectra to identify SnV center signatures.
  • Conducting photon autocorrelation measurements to confirm single SnV centers.

Main Results:

  • Achieved sharp zero-phonon lines for SnV centers around 620 nm.
  • Demonstrated the presence of single SnV centers within the DNDs.
  • SnV centers exhibit strong photoluminescence and long spin coherence times.

Conclusions:

  • Successful generation of SnV centers in ultrasmall DNDs is feasible.
  • SnV centers in DNDs are promising for quantum applications and biological temperature/structural sensing.
  • The developed method overcomes strain challenges for SnV center creation in nanodiamonds.