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Related Concept Videos

The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

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. Schrödinger...
Ampere-Maxwell's Law: Problem-Solving01:17

Ampere-Maxwell's Law: Problem-Solving

A parallel-plate capacitor with capacitance C, whose plates have area A and separation distance d, is connected to a resistor R and a battery of voltage V. The current starts to flow at t = 0. What is the displacement current between the capacitor plates at time t? From the properties of the capacitor, what is the corresponding real current?
To solve the problem, we can use the equations from the analysis of an RC circuit and Maxwell's version of Ampère's law.
For the first part of the problem,...
The de Broglie Wavelength02:32

The de Broglie Wavelength

In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must have a...
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
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Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of one, the...

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Updated: Jul 4, 2026

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
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Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Published on: September 8, 2023

Spin-photon qubits for scalable quantum network.

Md Sakibul Islam1, Kuldeep Singh1, Yunhe Zhao1

  • 1Department of Electrical and Computer Engineering, University of Central Florida, Orlando, FL, USA.

Light, Science & Applications
|July 2, 2026
PubMed
Summary
This summary is machine-generated.

Solid-state quantum light sources are advancing quantum networks. Researchers are optimizing telecom-band spin-photonic qubits for scalable, long-distance quantum communication and integrated circuits.

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Area of Science:

  • Quantum Information Science
  • Solid-State Physics
  • Nanophotonics

Background:

  • Solid-state quantum light sources are crucial for scalable quantum networks.
  • Telecom-band spin-photonic qubits (1260-1675 nm) minimize loss in optical fibers for long-distance communication.
  • Scalability requires coherent spin control, deterministic single-photon emission, and nanophotonic integration.

Purpose of the Study:

  • To review state-of-the-art spin-photonic qubits in solid-state platforms.
  • To focus on silicon-based emitters for CMOS integration and telecom-band operation.
  • To discuss advancements in cavity quantum electrodynamics and quantum photonic integrated circuits.

Main Methods:

  • Survey of solid-state platforms: diamond color centers, silicon carbide defects, quantum dots, 2D materials.
  • Classification of emitters by spin-photon interface, CMOS compatibility, and scalability.
  • Analysis of cavity quantum electrodynamics (cQED) for enhanced radiative properties.

Main Results:

  • Silicon-based emitters (G, T, C-, Ci-centers) show promise for CMOS integration and telecom-band operation.
  • Progress in cQED, including Purcell enhancement and quality factor engineering in integrated photonics.
  • Emerging demonstrations of quantum networking at metropolitan scales.

Conclusions:

  • Developments pave the way for chip-scale quantum photonic integrated circuits (QPICs).
  • These advancements enable global quantum networks for secure communication, distributed computing, and sensing.
  • Coherent spin manipulation and deterministic emitter creation are key to future quantum technologies.