Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

12.3K
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
12.3K
Atomic Absorption Spectroscopy: Instrumentation01:22

Atomic Absorption Spectroscopy: Instrumentation

2.1K
An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
The atomizer used in AAS can be either a flame atomizer or an...
2.1K
Atomic Absorption Spectroscopy: Radiation and Light Sources01:13

Atomic Absorption Spectroscopy: Radiation and Light Sources

1.7K
Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
1.7K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Proteomic taxonomic identification can identify cryptic diversity of Squamata in modern and paleontological specimens.

Scientific reports·2026
Same author

Entanglement-inspired frequency-agile rangefinding.

Nature communications·2026
Same author

Wafer-scale CMOS foundry silicon-on-insulator devices for integrated temporal pulse compression.

Nanophotonics (Berlin, Germany)·2025
Same author

Alignment and packaging of a 1D-array of optical transition edge sensors to an optical fiber array.

Optics express·2025
Same author

Ultrafast neural sampling with spiking nanolasers.

Nature communications·2025
Same author

Stimulated Emission Tomography of Spontaneous Four-Wave Mixing in Plasmonic Nanoantennas.

ACS photonics·2025

Related Experiment Video

Updated: May 6, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

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

Published on: May 30, 2014

14.0K

Multi-photon absorption limits to heralded single photon sources.

Chad A Husko1, Alex S Clark, Matthew J Collins

  • 11] Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney, NSW 2006, Australia [2].

Scientific Reports
|November 5, 2013
PubMed
Summary

This study analyzes spontaneous four-wave mixing (SFWM) photon sources, revealing how two-photon absorption (TPA) limits heralded single photon sources. A new quantum utility (QMU) metric is introduced for optimizing these crucial quantum technology components.

More Related Videos

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
10:40

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

7.0K
Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

7.9K

Related Experiment Videos

Last Updated: May 6, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

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

Published on: May 30, 2014

14.0K
High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
10:40

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

7.0K
Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

7.9K

Area of Science:

  • Quantum optics
  • Photonic technologies
  • Materials science

Background:

  • Single photons are essential for quantum communication and computation.
  • Nonlinear photonic devices, like those using spontaneous four-wave mixing (SFWM), are key for photon generation.
  • Competing nonlinear processes, such as two-photon absorption (TPA) and three-photon absorption (ThPA), can degrade source performance.

Purpose of the Study:

  • To analyze SFWM photon sources in the presence of multi-photon absorption processes.
  • To investigate the impact of TPA and ThPA in silicon and gallium indium phosphide photonic crystal waveguides.
  • To develop a model and a new metric for optimizing single photon sources.

Main Methods:

  • Experimental analysis of SFWM in silicon and gallium indium phosphide photonic crystal waveguides.
  • Development of a novel theoretical model to capture TPA and ThPA effects.
  • Measurement of photon source brightness, coincidence-to-accidental ratio (CAR), and second-order correlation function g((2))(0).

Main Results:

  • The study quantitatively agrees with experimental measurements of brightness, CAR, and g((2))(0).
  • Two-photon absorption (TPA) in silicon waveguides was identified as an intrinsic limit for heralded single photon sources.
  • Three-photon absorption (ThPA) effects were observed in gallium indium phosphide waveguides.

Conclusions:

  • TPA fundamentally limits the performance of heralded single photon sources.
  • A new metric, the quantum utility (QMU), was devised for optimizing single photon sources.
  • Understanding and mitigating nonlinear absorption is crucial for advancing quantum technologies.