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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...
Electronic Structure of Atoms02:28

Electronic Structure of Atoms


An atom comprises protons and neutrons, which are contained inside the dense, central core called the nucleus, with electrons present around the nucleus. Taking into account the wave–particle duality of electrons and the uncertainty in position around the nucleus, quantum mechanics provides a more accurate model for the atomic structure. It describes atomic orbitals as the regions around the nucleus where electrons of discrete energy exist, characterized by four quantum numbers:  n, l, ml, and...
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...
The Bohr Model02:18

The Bohr Model

Following the work of Ernest Rutherford and his colleagues in the early twentieth century, the picture of atoms consisting of tiny dense nuclei surrounded by lighter and even tinier electrons continually moving about the nucleus was well established. This picture was called the planetary model since it pictured the atom as a miniature “solar system” with the electrons orbiting the nucleus like planets orbiting the sun. The simplest atom is hydrogen, consisting of a single proton as the nucleus...
Fermi Level Dynamics01:12

Fermi Level Dynamics

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Electron Behavior

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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

Quantum interface between an electrical circuit and a single atom.

D Kielpinski1, D Kafri, M J Woolley

  • 1Centre for Quantum Dynamics, Griffith University, Nathan, Queensland 4111, Australia.

Physical Review Letters
|May 1, 2012
PubMed
Summary
This summary is machine-generated.

Researchers engineered a quantum link between ion motion and resonant circuits. This enables faster quantum information transfer and new interfaces for atomic and solid-state quantum systems.

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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Last Updated: May 22, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
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Published on: June 3, 2015

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Area of Science:

  • Quantum physics
  • Quantum information science
  • Atomic physics

Background:

  • Bridging the gap between atomic systems and electronic devices is crucial for quantum technologies.
  • Current methods for interfacing atomic and solid-state systems face speed and efficiency limitations.

Purpose of the Study:

  • To develop a method for coupling the motion of a single ion to the quantized electric field of a resonant circuit.
  • To enable high-speed quantum information transfer between atomic and electronic systems.
  • To create a quantum interface for connecting solid-state qubits, atomic qubits, and light.

Main Methods:

  • Engineering a direct coupling between the motional state of a single ion and a resonant circuit's quantized electric field.
  • Utilizing established quantum information protocols by adapting them for ion-photon interactions.

Main Results:

  • Achieved coupling speeds for ion-circuit interactions comparable to ion-ion internal-state couplings.
  • Demonstrated the conversion of existing quantum information protocols to operate between circuit photons and ion internal states.
  • Established a pathway for direct quantum connections between electrical and atomic metrology standards.

Conclusions:

  • The developed method successfully bridges the divide between atomic systems and electronic devices.
  • This work paves the way for novel quantum interfaces and enhanced metrology standards.
  • The findings have significant implications for the future of quantum computing and communication.