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In structural engineering, the analysis of beams subjected to varying loads is a critical aspect of understanding the behavior and performance of these structural elements. A common scenario involves a beam subjected to a combination of different load distributions.
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Single-Photon Emitters in Boron Nitride Nanococoons.

Joshua Ziegler, Andrew Blaikie, Aidin Fathalizadeh1,2

  • 1Department of Physics , University of California , Berkeley , California 97403 , United States.

Nano Letters
|March 28, 2018
PubMed
Summary

Researchers discovered a new quantum emitter, the boron nitride nanococoon (BNNC), in a zero-dimensional allotrope. This BNNC offers stable, bright single-photon emission, overcoming limitations of hexagonal boron nitride (hBN) emitters for quantum technologies.

Keywords:
Zero-dimensional materialboron nitride nanococoonshexagonal boron nitridequantum probesingle-photon emitter

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Area of Science:

  • Quantum optics and photonics
  • Materials science and nanotechnology

Background:

  • Two-dimensional hexagonal boron nitride (hBN) hosts ultra-bright, room-temperature single-photon emitters (SPEs) valuable for quantum and photonic technologies.
  • Large, strain-induced wavelength shifts in hBN emitters limit their practical applications and prominence.

Purpose of the Study:

  • To discover and characterize a novel single-photon emitter with improved spectral stability.
  • To explore new boron nitride allotropes for advanced quantum and photonic applications.

Main Methods:

  • Identification of a visible-wavelength SPE in a zero-dimensional boron nitride allotrope, the boron nitride nanococoon (BNNC).
  • Cross-correlation of optical confocal microscopy with high-resolution scanning and transmission electron microscopy to pinpoint the emitter's origin.
  • Characterization of optical properties, including emission line variation, compared to hBN emitters.

Main Results:

  • Discovery of a novel SPE in the nanometer-size BNNC.
  • The BNNC emitter exhibits excellent optical characteristics comparable to few-layer hBN.
  • BNNC shows a 5x lower emission line variation than hBN emitters, indicating superior spectral stability.

Conclusions:

  • The boron nitride nanococoon (BNNC) represents a significant advancement in quantum emitter technology.
  • BNNC's unique properties, including spectral stability and small size, open new avenues for nanophotonics, quantum information, biological imaging, and nanoscale sensing.