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

Propagation of Waves01:07

Propagation of Waves

3.2K
When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
3.2K
The de Broglie Wavelength02:32

The de Broglie Wavelength

34.4K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
34.4K
Reflection of Waves01:07

Reflection of Waves

4.8K
When a wave travels from one medium to another, it gets reflected at the boundary of the second medium. A common example of this is when a person yells at a distance from a cliff and hears the echo of their voice. The sound waves (longitudinal waves) traveling in the air are reflected from the bounding cliff. Similarly, flipping one end of a string whose other end is tied to a wall causes a pulse (transverse wave) to travel through the string, which gets reflected upon reaching the wall. In...
4.8K
Plane Electromagnetic Waves I01:30

Plane Electromagnetic Waves I

5.3K
The existence of combined electric and magnetic fields that propagate through space as electromagnetic (EM) waves is the most significant prediction of Maxwell's equations. As Maxwell's equations hold in free space, the predicted electromagnetic waves do not require a medium for their propagation. An EM wave comprises an electric field, defined as the force per charge on a stationary charge, and a magnetic field, which is the force per charge on a moving charge.
The EM field is assumed to be a...
5.3K
The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

61.4K
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.
61.4K
The Wave Nature of Light02:12

The Wave Nature of Light

63.2K
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.
63.2K

You might also read

Related Articles

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

Sort by
Same author

Unmasking the polygamous nature of quantum nonlocality.

Proceedings of the National Academy of Sciences of the United States of America·2024
Same author

Numerical tests of magnetoreception models assisted with behavioral experiments on American cockroaches.

Scientific reports·2021
Same author

Creating and concentrating quantum resource states in noisy environments using a quantum neural network.

Neural networks : the official journal of the International Neural Network Society·2021
Same author

Reconstructing Quantum States With Quantum Reservoir Networks.

IEEE transactions on neural networks and learning systems·2020
Same author

Quantum Neuromorphic Platform for Quantum State Preparation.

Physical review letters·2020
Same author

In-vivo biomagnetic characterisation of the American cockroach.

Scientific reports·2018
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: Mar 22, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

13.3K

General Quantum Backflow in Realistic Wave Packets.

Tomasz Paterek1,2, Arseni Goussev3,4

  • 1Xiamen University Malaysia, School of Mathematics and Physics, 43900 Sepang, Malaysia.

Physical Review Letters
|March 20, 2026
PubMed
Summary
This summary is machine-generated.

Quantum backflow, where particle probability moves against momentum, is now observable. New methods reveal general backflow up to 13%, exceeding previous limits and enabling experimental verification.

More Related Videos

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.8K
An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

9.1K

Related Experiment Videos

Last Updated: Mar 22, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

13.3K
Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.8K
An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

9.1K

Area of Science:

  • Quantum mechanics
  • Quantum phenomena
  • Wave packet dynamics

Background:

  • Quantum backflow is a counterintuitive effect where particle probability density moves opposite to momentum.
  • Experimental observation is hindered by the small effect size (<4%) and difficulty preparing/verifying wave packets in noisy conditions.

Purpose of the Study:

  • To develop a general formulation for quantum backflow applicable to arbitrary momentum distributions.
  • To identify and quantify general backflow beyond the standard backflow limit.
  • To extend the framework to quantum reentry and explore foundational implications.

Main Methods:

  • Introduced a general theoretical framework for quantum backflow.
  • Defined general backflow as probability flow exceeding momentum distribution predictions.
  • Applied the framework to arbitrary momentum distributions and wave packets.

Main Results:

  • The general framework recovers standard backflow for unidirectional states.
  • Demonstrated general backflow exceeding 13%, over three times the standard bound.
  • Extended the framework to quantum reentry, identifying states with large effects.

Conclusions:

  • The developed framework overcomes experimental challenges for observing quantum backflow.
  • The results significantly enhance the potential for experimental verification of quantum backflow and reentry.
  • This work opens new avenues for exploring foundational aspects of quantum mechanics.