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Related Experiment Videos

Random Number Generation with Cosmic Photons.

Cheng Wu1,2, Bing Bai1,2, Yang Liu1,2

  • 1Shanghai Branch, Department of Modern Physics and National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Shanghai 201315, China.

Physical Review Letters
|April 22, 2017
PubMed
Summary

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Cosmic photons enable new random number generators (RNGs) that pass statistical tests. These RNGs can close loopholes in quantum mechanics experiments, strengthening evidence for quantum theory.

Area of Science:

  • Quantum mechanics and fundamental physics
  • Information science and cryptography

Background:

  • Random numbers are crucial for scientific testing and secure encryption.
  • Existing random number generators (RNGs) are locally constructed, posing a 'freedom-of-choice' loophole in nonlocality tests.
  • Nonlocality tests are vital for validating quantum mechanics.

Purpose of the Study:

  • To develop and experimentally realize novel random number generators (RNGs).
  • To address the freedom-of-choice loophole in nonlocality tests.
  • To provide a robust method for generating randomness for quantum experiments.

Main Methods:

  • Experimental realization of RNGs utilizing the arrival times of cosmic photons.
  • Validation of generated random data using the standard NIST statistical test suite.

Related Experiment Videos

  • Development of a design for integrating these RNGs into a Bell test experiment.

    • Main Results:

    • Successfully generated random numbers from cosmic photon arrival times.
    • The raw data from the cosmic photon RNGs passed all standard NIST statistical tests.
    • A feasible design for employing these RNGs in loophole-free Bell tests was presented.

    Conclusions:

    • Cosmic photon-based RNGs offer a viable solution for generating high-quality random numbers.
    • This approach effectively addresses the freedom-of-choice loophole in nonlocality tests.
    • The findings enhance the reliability of experimental validation for quantum mechanics.