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The Quantum-Mechanical Model of an Atom

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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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Related Experiment Video

Updated: Aug 3, 2025

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Material-Inherent Noise Sources in Quantum Information Architecture.

HeeBong Yang^1,2,3, Na Young Kim^1,2,3,4,5

¹Institute of Quantum Computing, University of Waterloo, 200 University Ave. West, Waterloo, ON N2L 3G1, Canada.

Materials (Basel, Switzerland)

|April 13, 2023

Summary

The current era of noisy intermediate-scale quantum (NISQ) technology is advancing quantum information processing. This review explores noise sources and reduction methods crucial for developing future large-scale, fault-tolerant quantum technologies.

Keywords:

decoherence noise quantum information processing quantum technologies semiconductor spin-qubit quantum systems superconducting quantum system trapped-ion quantum systems

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Last Updated: Aug 3, 2025

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

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Published on: April 4, 2017

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

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Published on: May 30, 2014

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Published on: September 8, 2023

Area of Science:

Quantum Information Processing (QIP)
Quantum Computing
Materials Science

Background:

Quantum computing is entering the noisy intermediate-scale quantum (NISQ) era, reaching Technology Readiness Level 5.
Exploiting quantum principles like entanglement and coherence promises unprecedented computational power.
Significant challenges remain in achieving fault-tolerant quantum architectures due to noise and errors.

Purpose of the Study:

To review noisy processes in current quantum architectures.
To identify origins of noise in quantum materials and devices.
To summarize research on noise reduction methods for advanced quantum technologies.

Main Methods:

Survey of scientific literature on quantum noise.
Analysis of material properties affecting quantum systems.
Summary of experimental and theoretical noise mitigation strategies.

Main Results:

Identified key sources of noise in NISQ devices.
Highlighted the role of materials in quantum error generation.
Cataloged various approaches to noise reduction and control.

Conclusions:

Overcoming noise is essential for scaling quantum technologies.
Continued research into materials and error correction is vital for future quantum advancements.
The NISQ era provides a foundation for developing large-scale, fault-tolerant quantum computers.