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Related Concept Videos

The Wave Nature of Light02:12

The Wave Nature of Light

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The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
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When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
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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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The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
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Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
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Updated: Apr 13, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Quantum optics: science and technology in a new light.

I A Walmsley1

  • 1Department of Physics, Clarendon Laboratory, University of Oxford, Oxford, OX1 3PU, UK.

Science (New York, N.Y.)
|May 2, 2015
PubMed
Summary

Quantum light, with its low noise and strong correlations, is key to exploring nature and developing new technologies. Advances in optical components enable the creation of complex quantum states, pushing the boundaries of computation.

Area of Science:

  • Quantum optics
  • Quantum information science
  • Photonics

Background:

  • Quantum light's low noise and strong correlations are crucial for scientific discovery and technological innovation.
  • Optical telecommunications components are accelerating progress in quantum science and technology.

Purpose of the Study:

  • To highlight the role of quantum light in exploring fundamental properties of nature.
  • To showcase how advancements in optical components enable new quantum technologies.
  • To emphasize the potential of large-scale quantum networks.

Main Methods:

  • Leveraging components from optical telecommunications and networking.
  • Utilizing highly efficient detectors, integrated photonic circuits, and nonlinear optical devices.

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  • Generating new quantum states of light and matter with many photons.

    • Main Results:

    • Creation of unprecedentedly large quantum states of light and matter.
    • Demonstration of strong quantum correlations across space and time.
    • Development of networks with tens of photons, exceeding current computational analysis capabilities.

    Conclusions:

    • Quantum light is a powerful tool for both fundamental research and technological advancement.
    • The integration of optical telecommunications technology is vital for scaling quantum systems.
    • The complexity of emergent quantum networks presents new computational challenges and opportunities.