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 Experiment Video

Updated: May 3, 2026

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

9.8K

Ultra-fast quantum randomness generation by accelerated phase diffusion in a pulsed laser diode.

C Abellán, W Amaya, M Jofre

    Optics Express
    |February 12, 2014
    PubMed
    Summary
    This summary is machine-generated.

    Related Concept Videos

    You might also read

    Related Articles

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

    Sort by
    Same author

    Integrated InP-based transmitter for continuous-variable quantum key distribution.

    Optics express·2025
    Same author

    Small-form-factor Gaussian-modulated coherent-state transmitter for CV-QKD using a gain-switched DFB laser.

    Optics express·2023
    Same author

    Squeezed-Light Enhancement and Backaction Evasion in a High Sensitivity Optically Pumped Magnetometer.

    Physical review letters·2021
    Same author

    Erratum: Simple Proof of Equivalence between Adiabatic Quantum Computation and the Circuit Model [Phys. Rev. Lett. 99, 070502 (2007)].

    Physical review letters·2021
    Same author

    Adaptable transmitter for discrete and continuous variable quantum key distribution.

    Optics express·2021
    Same author

    Plug-and-play continuous-variable quantum key distribution for metropolitan networks.

    Optics express·2020
    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

    We developed a quantum random number generator using a laser diode, achieving a 43 Gbps random bit rate. This method leverages phase diffusion for high-speed, secure random number generation.

    Area of Science:

    • Quantum optics
    • Semiconductor lasers
    • Information security

    Background:

    • Quantum random number generators (QRNGs) are crucial for secure communication.
    • Existing QRNGs face limitations in speed and complexity.
    • Semiconductor lasers offer a compact and efficient platform for quantum applications.

    Purpose of the Study:

    • To demonstrate a high bit-rate QRNG.
    • To utilize phase diffusion in a gain-switched laser diode for randomness.
    • To achieve high-speed random bit string generation.

    Main Methods:

    • Employing a gain-switched distributed feedback (DFB) laser diode for pulse generation.
    • Using an unbalanced Mach-Zehnder interferometer to interfere subsequent pulses.
    • Detecting and digitizing the resulting random-amplitude pulses.

    More Related Videos

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation
    10:52

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation

    Published on: February 4, 2017

    9.5K
    Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
    07:42

    Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

    Published on: December 15, 2021

    2.5K

    Related Experiment Videos

    Last Updated: May 3, 2026

    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

    9.8K
    Direct Imaging of Laser-driven Ultrafast Molecular Rotation
    10:52

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation

    Published on: February 4, 2017

    9.5K
    Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
    07:42

    Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

    Published on: December 15, 2021

    2.5K

    Main Results:

    • Observed high visibility interference and phase diffusion between laser pulses.
    • Confirmed vacuum-fluctuation-induced phase diffusion through pulse power statistics.
    • Achieved a 43 Gbps quantum randomness generation rate with 14-bit digitization.

    Conclusions:

    • The demonstrated method provides a high-speed QRNG.
    • Gain-switched DFB lasers are suitable for generating quantum randomness.
    • This technique offers a promising route for practical quantum random number generation.