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Related Concept Videos

Imperfections in Crystal Structure: Point, Line and Plane Defects01:25

Imperfections in Crystal Structure: Point, Line and Plane Defects

A perfect crystal, in theory, has a uniform structure with the same unit cell and lattice points throughout. However, any deviation from this periodic arrangement is known as an imperfection or defect. These defects can be categorized into three types: point, line, and plane defects.Point defects occur when there is a deviation from the ideal due to missing atoms, displaced atoms, or additional atoms. These imperfections might occur due to imperfect packing during crystallization or because of...
Imperfections in Crystal Structure: Stoichiometric Point Defects01:26

Imperfections in Crystal Structure: Stoichiometric Point Defects

Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...

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Related Experiment Video

Updated: Jun 22, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Diamond based photonic crystal microcavities.

S Tomljenovic-Hanic, M J Steel, C Martijn de Sterke

    Optics Express
    |June 12, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Diamond photonic crystal microcavities show promise for quantum computing qubits. These structures achieve high quality factors (Q), enabling strong coupling for quantum applications, even with lower index contrast.

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    Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
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    Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

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    Related Experiment Videos

    Last Updated: Jun 22, 2026

    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
    11:08

    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

    Published on: November 30, 2012

    Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
    13:02

    Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

    Published on: February 25, 2017

    Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
    10:35

    Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

    Published on: September 26, 2014

    Area of Science:

    • Quantum Information Science
    • Materials Science
    • Optics and Photonics

    Background:

    • Diamond is a promising material for quantum computing due to its potential for qubit implementation.
    • Photonic crystal architectures are crucial for developing scalable and controllable nanocavities for quantum electrodynamics.

    Purpose of the Study:

    • To compute and compare the photonic band structures and quality factors (Q) of diamond and silicon microcavities.
    • To assess the suitability of diamond-based photonic crystals for quantum computing applications.

    Main Methods:

    • Numerical computation of photonic band structures.
    • Calculation of quality factors for microcavities in photonic crystal slabs.
    • Comparative analysis between diamond and silicon platforms.

    Main Results:

    • Diamond-based photonic crystal microcavities can achieve high quality factors (Q) of 3.0x10^4.
    • These Q factors are sufficient for proof-of-principle demonstrations in the quantum regime.
    • Diamond exhibits competitive performance despite lower index contrast compared to silicon.

    Conclusions:

    • Diamond photonic crystal microcavities are a viable platform for quantum computing.
    • The achieved Q factors support strong coupling for cavity quantum electrodynamics.
    • Diamond offers a scalable route for high-quality quantum device fabrication.