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Related Concept Videos

Quantum Numbers02:43

Quantum Numbers

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It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
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The Quantum-Mechanical Model of an Atom02:45

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Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
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Metallic Solids02:37

Metallic Solids

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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
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Structures of Solids02:22

Structures of Solids

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Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
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Network Covalent Solids02:18

Network Covalent Solids

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Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
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Molecular and Ionic Solids02:54

Molecular and Ionic Solids

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Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
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Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
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Compact Quantum Dots for Single-molecule Imaging
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A monolithic immersion metalens for imaging solid-state quantum emitters.

Tzu-Yung Huang1, Richard R Grote1,2, Sander A Mann3,4

  • 1Quantum Engineering Laboratory, Department of Electrical and Systems Engineering, University of Pennsylvania, 200 S. 33rd Street, Philadelphia, PA, 19104, USA.

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Researchers developed a diamond metasurface acting as an immersion lens. This quantum technology breakthrough enhances light collection from nitrogen-vacancy (NV) centers for miniaturized quantum devices.

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Area of Science:

  • Quantum optics
  • Materials science
  • Nanotechnology

Background:

  • Quantum emitters like diamond nitrogen-vacancy (NV) centers are crucial for quantum technologies.
  • Photon collection is hindered by optical losses at interfaces, limiting device packaging.
  • Current free-space optics setups are not conducive to miniaturization.

Purpose of the Study:

  • To overcome limitations in photon collection and device packaging for quantum emitters.
  • To design and fabricate a metasurface for efficient light management of individual NV centers.

Main Methods:

  • Designed and fabricated a metasurface composed of nanoscale diamond pillars.
  • Utilized the metasurface as an immersion lens to collect and collimate NV center emission.
  • Characterized the metalens for its numerical aperture and fiber-coupling capabilities.

Main Results:

  • The metasurface demonstrated a numerical aperture greater than 1.0.
  • Achieved efficient fiber-coupling of single quantum emitters.
  • Successfully collected and collimated emission from an individual NV center.

Conclusions:

  • The developed diamond metasurface functions as an effective immersion lens for quantum emitters.
  • This technology enables efficient fiber-coupling and paves the way for miniaturized quantum devices.
  • The flexible design supports integration with various host materials and advanced photon manipulation.