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

Faraday's Law01:10

Faraday's Law

5.3K
Faraday's law state that the induced emf is the negative change in the magnetic flux per unit of time. Any change in the magnetic field or change in the orientation of the area of the coil with respect to the magnetic field induces a voltage (emf). The magnetic flux measures the number of magnetic field lines through a given surface area. Magnetic flux is estimated from the integral of the dot product of the magnetic field vector and the area vector. The negative sign describes the...
5.3K
Time and frequency -Domain Interpretation of Phase-lag Control01:21

Time and frequency -Domain Interpretation of Phase-lag Control

472
Phase-lag controllers are widely used in control systems to improve stability and reduce steady-state errors. A dimmer switch controlling the brightness of a light bulb serves as a practical example of phase-lag control, gradually adjusting the bulb's brightness. Mathematically, phase-lag control or low-pass filtering is represented when the factor 'a' is less than 1.
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any...
472
Phase-lead and Phase-lag Controllers01:22

Phase-lead and Phase-lag Controllers

664
Understanding the working function of different types of controllers can be illustrated with practical analogies, such as adjusting a stereo's volume equalizer. Cranking up the bass involves a phase-lead controller, which functions as a high-pass filter, while increasing the treble uses a phase-lag controller, which acts as a low-pass filter. PD controllers, similar to high-pass filters, enhance the system's response to high-frequency components. PI controllers, akin to low-pass...
664
Time and frequency -Domain Interpretation of Phase-lead Control01:24

Time and frequency -Domain Interpretation of Phase-lead Control

566
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
566
Phase Transitions02:31

Phase Transitions

19.1K
Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to...
19.1K
Phase Transitions01:21

Phase Transitions

108
A phase transition is the process in which a substance changes from one state of matter to another, like from a solid to a liquid, liquid to gas, or vice versa, at a specific temperature and under given pressure conditions. This change is spontaneous and is affected by alterations in temperature and pressure. These parameters impact the strength of the forces between molecules (intermolecular forces) in the substance.During a phase transition, both the initial and final phases of the substance...
108

You might also read

Related Articles

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

Sort by
Same author

A review of the advances in implant technology: accomplishments and challenges for the design of functionalized surface structures.

Biomedical materials (Bristol, England)·2025
Same author

Cavity magnon-polariton interface for strong spin-spin coupling.

Optics letters·2025
Same author

[A correlation study between the occlusal cant and temporomandibular joint space in patients with mandibular lateral deviation].

Shanghai kou qiang yi xue = Shanghai journal of stomatology·2024
Same author

Genetic variations in the bitter taste receptor gene TAS2R38 are related to cigarette smoking behavior in Han Chinese smokers.

Genes & genomics·2022
Same author

[Estimation of Nitrous Oxide Emission from River System Based on Water Discharge and Dissolved Nitrous Oxide Concentration].

Huan jing ke xue= Huanjing kexue·2022
Same author

[Influence on the condyle position by decreasing posterior occlusal plane angle in Class II high angle cases].

Shanghai kou qiang yi xue = Shanghai journal of stomatology·2018
Same journal

Denoising algorithm of Φ-OTDR systems based on adaptive fractional wavelet transform denoising.

Optics express·2026
Same journal

Millisecond photon-to-photon latency and high-speed volumetric projection system for optogenetics.

Optics express·2026
Same journal

Polarization-encoded coaxial structured light for high-precision 3D surface profilometry.

Optics express·2026
Same journal

Discrete freeform optical design based on collaborative optimization of point cloud and local normals.

Optics express·2026
Same journal

Ultrafast ghost imaging with 25 GHz speckle switching and wavelength-division multiplexing.

Optics express·2026
Same journal

Atomic vapor cells fabricated by femtosecond laser welding of standard-optical-quality glass.

Optics express·2026
See all related articles

Related Experiment Video

Updated: Apr 30, 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

13.9K

Optical continuous-variable quadratic phase gate via Faraday interaction.

Ming-Feng Wang, Nian-Quan Jiang, Yi-Zhuang Zheng

    Optics Express
    |May 3, 2014
    PubMed
    Summary
    This summary is machine-generated.

    We present a novel method for creating a continuous-variable (CV) quadratic phase gate using Faraday interaction in atomic ensembles. This approach offers high fidelity for quantum computation and polarization squeezing.

    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

    9.0K
    Gradient Echo Quantum Memory in Warm Atomic Vapor
    10:00

    Gradient Echo Quantum Memory in Warm Atomic Vapor

    Published on: November 11, 2013

    13.1K

    Related Experiment Videos

    Last Updated: Apr 30, 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

    13.9K
    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

    9.0K
    Gradient Echo Quantum Memory in Warm Atomic Vapor
    10:00

    Gradient Echo Quantum Memory in Warm Atomic Vapor

    Published on: November 11, 2013

    13.1K

    Area of Science:

    • Quantum Information Science
    • Atomic Physics
    • Quantum Optics

    Background:

    • Continuous-variable (CV) quantum computation relies on fundamental quantum gates.
    • The CV quadratic phase gate is crucial for universal CV quantum computation.
    • Experimental realization of this gate remains a significant challenge.

    Purpose of the Study:

    • To propose a novel and experimentally feasible scheme for realizing the CV quadratic phase gate.
    • To demonstrate its application in generating optical polarization squeezing.
    • To analyze the impact of noise on gate fidelity and squeezing.

    Main Methods:

    • Utilizing Faraday interaction within an atomic ensemble.
    • Preparing the atomic medium in a coherent spin state.
    • Passing an optical beam through the atomic medium three times.

    Main Results:

    • Achieved ideal gate fidelity up to one.
    • Demonstrated the scheme's effectiveness for generating optical polarization squeezing.
    • Showed that fidelities remain high despite atomic decoherence and light losses.

    Conclusions:

    • The proposed scheme provides an experimentally feasible method for the CV quadratic phase gate.
    • The technique is also effective for generating optical polarization squeezing.
    • The method exhibits robustness against common noise sources in quantum systems.