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

14.7K
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...
14.7K
Fluorescence and Phosphorescence: Instrumentation01:25

Fluorescence and Phosphorescence: Instrumentation

1.7K
Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.
1.7K
Total Internal Reflection Fluorescence Microscopy01:05

Total Internal Reflection Fluorescence Microscopy

13.6K
Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
13.6K
Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

21.5K
Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
21.5K
¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

1.6K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.6K
Variables Affecting Phosphorescence and Fluorescence01:26

Variables Affecting Phosphorescence and Fluorescence

1.7K
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
1.7K

You might also read

Related Articles

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

Sort by
Same author

Tailoring Photon Statistics with an Atom-Based Two-Photon Interferometer.

Physical review letters·2023
Same author

Light-Matter Interaction at the Transition between Cavity and Waveguide QED.

Physical review letters·2023
Same author

Collective Radiation of a Cascaded Quantum System: From Timed Dicke States to Inverted Ensembles.

Physical review letters·2023
Same author

Encoding information in the mutual coherence of spatially separated light beams.

Optics letters·2022
Same author

Ponderomotive Squeezing of Light by a Levitated Nanoparticle in Free Space.

Physical review letters·2022
Same author

Squeezed Light from a Levitated Nanoparticle at Room Temperature.

Physical review letters·2022

Related Experiment Video

Updated: Mar 3, 2026

Confocal Microscopy Reveals Cell Surface Receptor Aggregation Through Image Correlation Spectroscopy
06:51

Confocal Microscopy Reveals Cell Surface Receptor Aggregation Through Image Correlation Spectroscopy

Published on: August 2, 2018

7.6K

Emergence of Second-Order Coherence in Superfluorescence.

Constanze Bach1, Felix Tebbenjohanns1, Christian Liedl1

  • 1Humboldt-Universität zu Berlin, Department of Physics, 10099 Berlin, Germany.

Physical Review Letters
|March 1, 2026
PubMed
Summary

Researchers observed emerging second-order quantum coherence during superfluorescence in a cesium atom system. This finding reveals collective dynamics and shot-to-shot fluctuations in superradiant bursts.

More Related Videos

Dual-Color Fluorescence Cross-Correlation Spectroscopy to Study Protein-Protein Interaction and Protein Dynamics in Live Cells
14:12

Dual-Color Fluorescence Cross-Correlation Spectroscopy to Study Protein-Protein Interaction and Protein Dynamics in Live Cells

Published on: December 11, 2021

6.1K
Conducting Multiple Imaging Modes with One Fluorescence Microscope
08:32

Conducting Multiple Imaging Modes with One Fluorescence Microscope

Published on: October 28, 2018

10.3K

Related Experiment Videos

Last Updated: Mar 3, 2026

Confocal Microscopy Reveals Cell Surface Receptor Aggregation Through Image Correlation Spectroscopy
06:51

Confocal Microscopy Reveals Cell Surface Receptor Aggregation Through Image Correlation Spectroscopy

Published on: August 2, 2018

7.6K
Dual-Color Fluorescence Cross-Correlation Spectroscopy to Study Protein-Protein Interaction and Protein Dynamics in Live Cells
14:12

Dual-Color Fluorescence Cross-Correlation Spectroscopy to Study Protein-Protein Interaction and Protein Dynamics in Live Cells

Published on: December 11, 2021

6.1K
Conducting Multiple Imaging Modes with One Fluorescence Microscope
08:32

Conducting Multiple Imaging Modes with One Fluorescence Microscope

Published on: October 28, 2018

10.3K

Area of Science:

  • Quantum optics
  • Atomic physics
  • Condensed matter physics

Background:

  • Superradiance involves collective emission from excited atoms.
  • Cascaded quantum systems exhibit unique light-matter interactions.
  • Quantum coherence is crucial for understanding quantum phenomena.

Purpose of the Study:

  • To experimentally investigate second-order quantum coherence in a superradiant burst.
  • To explore the relationship between coherence, collective dynamics, and initial atomic states.
  • To study shot-to-shot fluctuations in superfluorescence emission delays.

Main Methods:

  • Chirally coupling ~900 cesium atoms to an optical nanofiber.
  • Preparing the atomic ensemble near the maximally excited state.
  • Measuring the second-order coherence function and photon emission correlations.

Main Results:

  • Observed the emergence of second-order coherence during superfluorescence decay.
  • Demonstrated that coherence is a signature of collective dynamics.
  • Found evidence of fundamental shot-to-shot fluctuations in burst emission delay.

Conclusions:

  • Second-order coherence dynamics are linked to collective effects in superradiance.
  • Superradiance in cascaded systems shows similarities to other coupling schemes.
  • Experimental findings provide insights into quantum fluctuations and collective emission.