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Related Experiment Video

Updated: Dec 21, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Continuous-variable random-number generation from an amplified spontaneous emission light source.

Tatsuya Tomaru

    Applied Optics
    |May 14, 2020
    PubMed
    Summary

    An amplified spontaneous emission (ASE) light source offers an ideal method for generating random numbers, leveraging inherent vacuum fluctuations. This practical approach ensures high-quality, continuous random number generation suitable for various applications.

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    Area of Science:

    • Quantum Optics
    • Information Science

    Background:

    • Amplified spontaneous emission (ASE) arises from quantum vacuum fluctuations.
    • ASE light sources are theoretically ideal for generating random numbers.

    Purpose of the Study:

    • To evaluate an amplified spontaneous emission (ASE) light source as a practical random-number generator.
    • To assess the quality of randomness derived from vacuum fluctuations.

    Main Methods:

    • Utilizing an Er-doped fiber as an ASE light source.
    • Employing interferometric measurement of ASE light to capture phase space information.
    • Evaluating the randomness of the generated numbers based on measurement accuracy.

    Main Results:

    • ASE light directly reflects continuous vacuum fluctuations in phase space.
    • The random-number source does not require interferometer stabilization due to inherent phase randomness.
    • Evaluated randomness met ideal standards at the measurement accuracy level.

    Conclusions:

    • ASE light sources are practical and ideal for generating high-quality random numbers.
    • The continuous nature of vacuum fluctuations allows for continuous random variable generation.
    • This method provides a robust approach to random number generation.