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

Interference and Diffraction02:18

Interference and Diffraction

52.6K
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
52.6K
RNA Interference01:23

RNA Interference

28.2K
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
28.2K
Interference and Decay01:16

Interference and Decay

490
Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
490
Sound Waves: Interference00:53

Sound Waves: Interference

4.8K
Sound waves can be modeled either as longitudinal waves, wherein the molecules of the medium oscillate around an equilibrium position, or as pressure waves. When two identical waves from the same source superimpose on each other, the combination of two crests or two troughs results in amplitude reinforcement known as constructive interference. If two identical waves, that are initially in phase, become out of phase because of different path lengths, the combination of crests with troughs...
4.8K
Interference and Superposition of Waves01:07

Interference and Superposition of Waves

7.1K
When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
7.1K
Interference: Path Lengths01:10

Interference: Path Lengths

2.3K
Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
2.3K

You might also read

Related Articles

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

Sort by
Same author

Murine Eosinophilic and Neutrophilic Chronic Rhinosinusitis Models Reveal Phenotype-Specific Steroid Responses.

American journal of rhinology & allergy·2026
Same author

Optical Sensing near the Quantum Limit with Enhanced Dynamic Range by Resolving the Spectra of Interfering Photons.

Physical review letters·2026
Same author

Two-photon induced coherence without induced emission.

Science advances·2025
Same author

Prostate MR image segmentation using a multi-stage network approach.

International urology and nephrology·2025
Same author

Robust and bright polarization-entangled photon sources exploiting non-critical phase matching without periodic poling.

Optics express·2025
Same author

Tunable up-conversion single-photon detector at telecom wavelengths.

Nanophotonics (Berlin, Germany)·2024
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

Related Experiment Video

Updated: Feb 15, 2026

RNA Interference in Ticks
09:06

RNA Interference in Ticks

Published on: January 20, 2011

18.6K

Second-Order Temporal Interference with Thermal Light: Interference beyond the Coherence Time.

Yong Sup Ihn1, Yosep Kim1, Vincenzo Tamma2

  • 1Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea.

Physical Review Letters
|January 13, 2018
PubMed
Summary
This summary is machine-generated.

We observed unexpected second-order interference in multipath correlation interferometry using thermal light. This interference persists even with long path differences, unlike in entangled-photon experiments.

More Related Videos

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
10:38

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

Published on: July 16, 2015

14.1K
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

9.0K

Related Experiment Videos

Last Updated: Feb 15, 2026

RNA Interference in Ticks
09:06

RNA Interference in Ticks

Published on: January 20, 2011

18.6K
A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
10:38

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

Published on: July 16, 2015

14.1K
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

9.0K

Area of Science:

  • Quantum optics
  • Classical optics
  • Interferometry

Background:

  • Multipath correlation interferometry explores quantum phenomena using classical light sources.
  • Unbalanced Mach-Zehnder interferometers (UMZIs) are key components in optical path manipulation.
  • Second-order interference, or intensity correlation, reveals subtle quantum and classical correlations.

Purpose of the Study:

  • To investigate the behavior of second-order interference in a multipath correlation setup with thermal light.
  • To compare the observed interference phenomena with those in entangled-photon interferometers.
  • To understand the interplay between coherence and interference in optical systems.

Main Methods:

  • Utilizing two unbalanced Mach-Zehnder interferometers (UMZIs) with classically correlated thermal light beams.
  • Measuring intensity correlations at the outputs of the UMZIs.
  • Varying path length differences within the UMZIs beyond the coherence length of the thermal light.

Main Results:

  • Observed genuine second-order interference with a visibility of 1/3.
  • Demonstrated that interference visibility remains constant irrespective of path length differences exceeding coherence length.
  • Showed interference dependence on the difference of UMZI phases, contrasting with entangled-photon setups.

Conclusions:

  • The study reveals a counterintuitive phenomenon in thermal light interferometry.
  • Results challenge conventional understanding of interference and coherence in optical systems.
  • Highlights significant differences between classical thermal light and quantum entangled photon interference.