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

Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

8.1K
The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
8.1K
Carrier Generation and Recombination01:22

Carrier Generation and Recombination

1.5K
Carrier generation is the process by which electron-hole pairs (EHPs) are created within the semiconductor. In direct-bandgap semiconductors, such as gallium arsenide (GaAs), this occurs efficiently when energy absorption prompts valence electrons to leap into the conduction band, leaving behind holes.
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...
1.5K
Vector Algebra: Method of Components01:08

Vector Algebra: Method of Components

20.4K
It is cumbersome to find the magnitudes of vectors using the parallelogram rule or using the graphical method to perform mathematical operations like addition, subtraction, and multiplication. There are two ways to circumvent this algebraic complexity. One way is to draw the vectors to scale, as in navigation, and read approximate vector lengths and angles (directions) from the graphs. The other way is to use the method of components.
In many applications, the magnitudes and directions of...
20.4K
Generator Voltage Control01:21

Generator Voltage Control

751
Generator voltage control is crucial for maintaining the stable operation of synchronous generators and wind turbines. In older models, a DC generator driven by the rotor delivers DC power to the rotor's field winding, and the power is transferred through slip rings and brushes. In the latest models, static or brushless exciters are used. Static exciters rectify AC power from the generator terminals and then transfer the DC power directly to the rotor. Brushless exciters, on the other hand, use...
751
Beams with Symmetric Loadings01:15

Beams with Symmetric Loadings

475
The moment-area method is an analytical tool used in structural engineering to determine the slope and deflection of beams under various loads. Consider a cantilever with a concentrated load and moment at the free end. The first step is constructing a free-body diagram to calculate the reactions at the fixed end. Next, the bending moment diagram is plotted to visualize how the bending moment varies along the beam's length, focusing on points where the bending moment equals zero.
The M/EI...
475
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

You might also read

Related Articles

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

Sort by
Same author

Composable free-space continuous-variable quantum key distribution using discrete modulation.

Science advances·2026
Same author

Dual-Ion Based Magneto-ionic Effects in Nanoporous Pd<sub>75</sub>Co<sub>25</sub> Alloy.

ACS materials Au·2026
Same author

Big sharks in the dark: High densities of the bluntnose sixgill shark Hexanchus griseus in the Gulf of Naples.

Ecology·2026
Same author

Optimizing the localization precision in coherent scattering microscopy using structured light.

Nanophotonics (Berlin, Germany)·2025
Same author

Horizon scanning and drug expenditure for rare diseases: three-year predictive model in Italy 2025-2027.

Health economics review·2025
Same author

Reply of the Authors on the Comment on "Quasi-Static Ultrasound Elastography of Ex-vivo Porcine Vocal Folds During Passive Elongation and Adduction".

Journal of voice : official journal of the Voice Foundation·2025

Related Experiment Video

Updated: Mar 18, 2026

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

Experimental generation of amplitude squeezed vector beams.

Vanessa Chille, Stefan Berg-Johansen, Marion Semmler

    Optics Express
    |July 14, 2016
    PubMed
    Summary

    Researchers developed a new method to create amplitude squeezed high-order vector beams using a spatial light modulator (SLM). This technique minimizes losses, crucial for quantum systems, and achieves quantum noise reduction.

    More Related Videos

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
    12:14

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

    Published on: August 12, 2013

    22.6K
    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

    Published on: January 28, 2019

    10.5K

    Related Experiment Videos

    Last Updated: Mar 18, 2026

    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
    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
    12:14

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

    Published on: August 12, 2013

    22.6K
    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

    Published on: January 28, 2019

    10.5K

    Area of Science:

    • Quantum optics
    • Photonics
    • Quantum information science

    Background:

    • High-order vector beams are essential for advanced optical applications.
    • Generating these beams with controlled quantum properties, like squeezing, is challenging.
    • Systematic losses degrade quantum coherence in continuous-variable quantum systems.

    Purpose of the Study:

    • To present an experimental method for generating amplitude squeezed high-order vector beams.
    • To demonstrate a technique that minimizes systematic losses, preserving quantum coherence.
    • To enable flexible generation of various vector beam modes using a spatial light modulator.

    Main Methods:

    • Utilizing a spatial light modulator (SLM) twice for light modification.
    • Employing a collinear interferometric technique to create vector beams.
    • Experimentally generating Laguerre-Gauss (LG) modes with specific radial and azimuthal indices.

    Main Results:

    • Successful generation of amplitude squeezed high-order vector beams.
    • Achieved quantum noise reduction of -0.9dB±0.1dB.
    • Demonstrated flexibility to switch between arbitrary mode orders using the SLM.
    • Detailed characterization of complex polarization structures by measuring Stokes parameters.

    Conclusions:

    • The presented method efficiently generates amplitude squeezed high-order vector beams with minimal losses.
    • The use of an SLM offers high flexibility in controlling beam properties and mode orders.
    • This technique is promising for applications in continuous-variable quantum information processing and quantum metrology.