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

Group Polarization01:01

Group Polarization

38.0K
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
38.0K
Time-Domain Interpretation of PD Control01:07

Time-Domain Interpretation of PD Control

266
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
266
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

5.6K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
5.6K
Frequency-Domain Interpretation of PD Control01:24

Frequency-Domain Interpretation of PD Control

245
Proportional-Derivative (PD) controllers are widely used in fan control systems to improve stability and performance. A fan control system can be effectively represented using a Bode plot to illustrate the impact of a PD controller through its transfer function. The Bode plot visually conveys how PD control modifies the fan's response across various frequencies, providing a frequency domain interpretation of the controller's behavior.
The proportional control gain, combined with the...
245
Continuous Charge Distributions01:17

Continuous Charge Distributions

7.7K
Imagine a bucket of water. It contains many molecules, of the order of 1026 molecules. Thus, although it contains discrete elements (molecules) at the microscopic level, macroscopically, it can be considered continuous. Small volume elements of water, infinitesimal compared to the bulk of the bucket's volume, still contain many molecules. Under this framework, quantized matter is approximated as continuous for practical purposes.
The electric charge can also be subjected to an analogical...
7.7K
Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

619
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
619

You might also read

Related Articles

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

Sort by
Same author

Senescent cells in systemic aging: SASP heterogeneity, immune escape, and endocrine modulation.

Biogerontology·2026
Same author

Long-Distance Free-Space Quantum Key Distribution with Continuous Variables.

Physical review letters·2026
Same author

Polarization-multiplexed co-transmission of continuous-variable QKD and quantum noise stream cipher.

Optics letters·2026
Same author

EZH2 PROTACs outperform catalytic inhibitors in prostate cancer by targeting a methylation-independent function of PRC2.

Oncogene·2026
Same author

Desulfurative modification of cysteine residues in peptides and proteins <i>via</i> the installation and photoexcitation of thieno[2,3-<i>c</i>]-pyrroles.

Chemical science·2025
Same author

Comparative Outcomes of Nurse-Led Early Mobilization Versus Standard Care in Acute Pancreatitis: A Randomized Controlled Trial.

Digestive diseases and sciences·2025
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: Dec 2, 2025

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

8.8K

Dynamic polarization control for free-space continuous-variable quantum key distribution.

Shiyu Wang, Peng Huang, Tao Wang

    Optics Letters
    |November 2, 2020
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a dynamic polarization control scheme for continuous-variable quantum key distribution (QKD) over free space. The proposed method effectively manages polarization fluctuations, crucial for secure quantum communication networks.

    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

    9.5K
    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

    14.9K

    Related Experiment Videos

    Last Updated: Dec 2, 2025

    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

    8.8K
    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

    9.5K
    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

    14.9K

    Area of Science:

    • Quantum Information Science
    • Optical Communication Systems

    Background:

    • Free-space quantum key distribution (QKD) is essential for global quantum networks.
    • Channel fading significantly challenges polarization control in continuous-variable (CV) QKD systems.

    Purpose of the Study:

    • To propose and validate a dynamic polarization control scheme for free-space CV-QKD.
    • To address the limitations of polarization stability in open-air quantum communication.

    Main Methods:

    • Development of a novel dynamic polarization control scheme.
    • Validation through extensive simulations.
    • Experimental verification over a 150-meter free-space channel.

    Main Results:

    • The proposed scheme demonstrates effective control of polarization states.
    • Successful operation was confirmed in both simulated and experimental settings.
    • The system maintained polarization stability despite channel fading.

    Conclusions:

    • The dynamic polarization control scheme is a viable solution for robust free-space CV-QKD.
    • This advancement facilitates the development of stable, large-scale quantum communication networks.
    • Effective polarization management is key to reliable quantum information transfer in free space.