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Tag: Spontaneous Parametric Down-Conversion

  • Sunlight Generates Quantum Entanglement Without Lasers
    Quantum Physics

    Sunlight Generates Quantum Entanglement Without Lasers

    by Rohail T.February 19, 2026
  • Shows Direct Spontaneous Four-Wave Mixing Dominates in Thin Layers for Photon Pairs
    Quantum Technology

    Shows Direct Spontaneous Four-Wave Mixing Dominates in Thin Layers for Photon Pairs

    by Rohail T.February 4, 2026
  • Researchers Achieve 3D Imaging of Biphoton Spatiotemporal Wave Packets Directly
    Quantum Internet

    Researchers Achieve 3D Imaging of Biphoton Spatiotemporal Wave Packets Directly

    by Rohail T.February 2, 2026
  • Reinforcement Learning Achieves 0.9119 Alignment for Satellite-Based Entanglement Sources
    Quantum Simulation

    Reinforcement Learning Achieves 0.9119 Alignment for Satellite-Based Entanglement Sources

    by Rohail T.January 28, 2026
  • Researchers Achieve Spectrally Separable Photon Pairs On-Chip for Quantum Technologies
    Technology

    Researchers Achieve Spectrally Separable Photon Pairs On-Chip for Quantum Technologies

    by Rohail T.January 22, 2026
  • Cmos Camera Achieves Image-Plane Detection of Spatially Entangled Photon Pairs at 4 Orders of Magnitude Higher Flux
    Quantum Physics

    Cmos Camera Achieves Image-Plane Detection of Spatially Entangled Photon Pairs at 4 Orders of Magnitude Higher Flux

    by Rohail T.January 7, 2026
  • High-purity Frequency-Degenerate Photon Pairs Advance Scalable Quantum Information Processing
    Quantum Applications

    High-purity Frequency-Degenerate Photon Pairs Advance Scalable Quantum Information Processing

    by Rohail T.December 17, 2025
  • Fiber-based Quantum Key Distribution Achieves 300GHz Bandwidth with 680nm and 1550nm Entangled Photons
    Quantum Internet

    Fiber-based Quantum Key Distribution Achieves 300GHz Bandwidth with 680nm and 1550nm Entangled Photons

    by Rohail T.December 15, 2025
  • Brazilian Twin Photon Experiments Mark 32 Years of Impact on Quantum Optics Research
    Quantum Physics

    Brazilian Twin Photon Experiments Mark 32 Years of Impact on Quantum Optics Research

    by Rohail T.December 11, 2025
  • Quantum Storage of Frequency-Multiplexed Photons Achieves 83 Frequency Modes with Telecom C-Band Compatibility
    Quantum Internet

    Quantum Storage of Frequency-Multiplexed Photons Achieves 83 Frequency Modes with Telecom C-Band Compatibility

    by Rohail T.November 24, 2025
  • Tensor-network Approach Efficiently Models Quantum Optical State Evolution Beyond the Fock Basis, Conserving Energy in Nonlinear Systems
    Quantum Research News

    Tensor-network Approach Efficiently Models Quantum Optical State Evolution Beyond the Fock Basis, Conserving Energy in Nonlinear Systems

    by Rohail T.November 21, 2025
  • Quantum Phase Gradient Imaging Achieves Precise Measurements Using a Nonlocal Metasurface System
    Quantum Sensors

    Quantum Phase Gradient Imaging Achieves Precise Measurements Using a Nonlocal Metasurface System

    by Rohail T.November 17, 2025
  • Hybrid III-V/Silicon Photonics Generate Biphoton States at Rates above 10s mW for Scalable Quantum Technologies
    Quantum Research News

    Hybrid III-V/Silicon Photonics Generate Biphoton States at Rates Above 10s mW for Scalable Quantum Technologies

    by Rohail T.November 17, 2025
  • Picosecond Wireless Synchronization with Entangled Photons Enables Indoor Optical Systems Via Grid-Based Quantum Coverage
    Quantum Physics

    Picosecond Wireless Synchronization with Entangled Photons Enables Indoor Optical Systems Via Grid-Based Quantum Coverage

    by Rohail T.October 27, 2025
  • Quantum Key Distribution Links Madrid, Barcelona, Lisbon Via Satellite for Secure Communication
    Security, Quantum Research News

    Quantum Key Distribution Links Madrid, Barcelona, Lisbon Via Satellite for Secure Communication

    by Rohail T.October 17, 2025
  • Nonlinear crystal emitting paired photons at 900–950nm, time-sliced light pulses stacking into stronger single-photon output
    Emerging Technology, Quantum Research News

    Quantum SPDC Source at 900-950nm Range Enhances Single Photon Generation Probability Via Time-Multiplexing

    by Rohail T.October 15, 2025
  • Quantum Photon Source in Lithium Niobate Waveguide Achieves 54.4% Efficiency and 99THz Bandwidth
    Quantum Applications

    Quantum Photon Source in Lithium Niobate Waveguide Achieves 54.4% Efficiency and 99THz Bandwidth

    by Rohail T.October 8, 2025
  • Flat Optics and Al0.30Ga0.70As Crystals Generate Telecom Photons at 0.24 Hz/mW/nm
    Technology News

    Flat Optics and Al0.30Ga0.70As Crystals Generate Telecom Photons at 0.24 Hz/mW/nm

    by Quantum NewsSeptember 7, 2025
  • Researchers Develop Label-free Hyperspectral Imaging Platform for Biomedical Applications with Single-photon Detection
    Quantum Research News

    Researchers Develop Label-free Hyperspectral Imaging Platform for Biomedical Applications with Single-photon Detection

    by Quantum NewsAugust 30, 2025
  • Pure Phase Entanglement Links Photon Position to Partner Momentum
    Physics, Quantum Physics

    Pure Phase Entanglement Links Photon Position to Partner Momentum

    by Quantum NewsAugust 18, 2025
  • Quantum Entanglement Demonstrated With Incoherent Light, No Spatial Filtering
    Quantum Physics

    Quantum Entanglement Demonstrated With Incoherent Light, No Spatial Filtering

    by Quantum NewsJuly 8, 2025
  • Vortex light entanglement unlocks new avenues for quantum information science.
    Quantum Physics

    Vortex light entanglement unlocks new avenues for quantum information science.

    by Quantum NewsJuly 8, 2025
  • Quantum Satellites Extend Secure Communication Across Continents.
    Quantum Internet

    Quantum Satellites Extend Secure Communication Across Continents.

    by Quantum NewsJuly 4, 2025
  • Integrated Photonics: High-Purity, Tunable Photon Pairs for Scalable Networks.
    Quantum Physics

    Integrated Photonics: High-Purity, Tunable Photon Pairs for Scalable Networks.

    by Quantum NewsJune 29, 2025
  • Triple-Photon States Enable Control of Non-Gaussian Quantum Correlations for Applications.
    Quantum Physics

    Triple-Photon States Enable Control of Non-Gaussian Quantum Correlations for Applications.

    by Quantum NewsJune 19, 2025
  • Entanglement Certification Reliant on Camera Performance and Data Processing Methods.
    Quantum Security

    Entanglement Certification Reliant on Camera Performance and Data Processing Methods.

    by Quantum NewsJune 16, 2025
  • Continuous Entanglement Generation via Frequency Manipulation of Two-Photon States.
    Quantum Applications, Quantum Research News

    Continuous Entanglement Generation via Frequency Manipulation of Two-Photon States.

    by Quantum NewsJune 16, 2025

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Quantum Zeitgeist covers the business, science and technology of quantum computing. Founded in 2018, we publish daily news, company analysis and original features for researchers, investors and technology leaders. Explore over 940 quantum companies across 47 countries in our Quantum Navigator.

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