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

Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

866
NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of...
866
Atomic Nuclei: Nuclear Spin State Population Distribution01:14

Atomic Nuclei: Nuclear Spin State Population Distribution

940
Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.
940
Atomic Nuclei: Nuclear Relaxation Processes01:23

Atomic Nuclei: Nuclear Relaxation Processes

622
In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis,  the precessing magnetic moments are randomly oriented around the z-axis.
622
Quantum Numbers02:43

Quantum Numbers

34.3K
It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
34.3K
¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

1.0K
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...
1.0K
The de Broglie Wavelength02:32

The de Broglie Wavelength

25.3K
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...
25.3K

You might also read

Related Articles

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

Sort by
Same author

Proposal to correct aberration and turbulence effects in the propagation of Laguerre-Gaussian modes.

Journal of the Optical Society of America. A, Optics, image science, and vision·2025
Same author

Estimation of statistical properties of rough surface profiles from the Hurst exponent of speckle patterns.

Applied optics·2020
Same author

Non-Markovianity through quantum coherence in an all-optical setup.

Optics letters·2019
Same author

Orbital angular momentum symmetry in a driven optical parametric oscillator.

Optics letters·2018
Same author

Speckle patterns produced by an optical vortex and its application to surface roughness measurements.

Applied optics·2017
Same author

Tripartite nonseparability in classical optics.

Optics letters·2016
Same journal

Gaussian-modulated continuous-variable quantum key distribution over 60 km fiber using an integrated silicon photonic receiver.

Optics letters·2026
Same journal

E2E-OCT: end-to-end joint learning model using optical coherence tomography images for vocal cord leukoplakia diagnosis.

Optics letters·2026
Same journal

Holographic generation of panoramic 3D scenes by concave ellipsoidal mirror reflection.

Optics letters·2026
Same journal

Dual-pilot phase recovery with pair-wise maximum-ratio combining for coherent PONs.

Optics letters·2026
Same journal

Mapping the whispering gallery modes of a CaF<sub>2</sub> disk resonator with half-tapered fibers to estimate the fundamental mode volume.

Optics letters·2026
Same journal

Quantitative estimation of deep-subwavelength scale via dark-field scattering axial energy concentration decay profiles.

Optics letters·2026
See all related articles

Related Experiment Video

Updated: Jun 5, 2025

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

9.5K

Transition from quantum-to-classical random walk distributions with spin-orbit modes.

V S Lamego, G T C Cruz, D R A B Lima

    Optics Letters
    |December 13, 2024
    PubMed
    Summary
    This summary is machine-generated.

    Quantum walks transition to classical behavior through decoherence. This study experimentally emulates this process for polarization qubits, observing quantum, quantum stochastic, and classical random walk distributions.

    More Related Videos

    Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
    09:00

    Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

    Published on: June 28, 2018

    9.8K
    Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
    11:21

    Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

    Published on: March 30, 2017

    7.4K

    Related Experiment Videos

    Last Updated: Jun 5, 2025

    Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
    05:39

    Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

    Published on: August 2, 2019

    9.5K
    Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
    09:00

    Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

    Published on: June 28, 2018

    9.8K
    Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
    11:21

    Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

    Published on: March 30, 2017

    7.4K

    Area of Science:

    • Quantum information science
    • Quantum computing
    • Quantum optics

    Background:

    • Quantum walks (QW) provide a computational speed-up over classical random walks for search algorithms.
    • Understanding the transition from quantum to classical behavior is crucial for developing robust quantum technologies.

    Purpose of the Study:

    • To experimentally investigate the transition from quantum walks to classical random walks.
    • To emulate decoherence in a quantum walk system using polarization qubits.
    • To observe and analyze the different random walk distributions (quantum, quantum stochastic, classical).

    Main Methods:

    • Utilized an all-optical quantum walk circuit with polarization qubits.
    • Employed maximally non-separable spin-orbit modes of an intense laser beam.
    • Continuously controlled the input polarization mode to tune the decoherence process.

    Main Results:

    • Successfully emulated the decoherence process affecting polarization qubits in a quantum walk.
    • Observed a clear transition between quantum, quantum stochastic, and classical random walk distributions.
    • Experimental results align with theoretical predictions for the quantum-to-classical transition.

    Conclusions:

    • Demonstrated experimental control over the quantum-to-classical transition in quantum walks.
    • Validated the theoretical framework for decoherence in quantum walk systems.
    • This work provides insights into the practical implementation of quantum search algorithms and quantum computing.