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Related Concept Videos

Propagation of Uncertainty from Random Error00:59

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An experiment often consists of more than a single step. In this case, measurements at each step give rise to uncertainty. Because the measurements occur in successive steps, the uncertainty in one step necessarily contributes to that in the subsequent step. As we perform statistical analysis on these types of experiments, we must learn to account for the propagation of uncertainty from one step to the next. The propagation of uncertainty depends on the type of arithmetic operation performed on...
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A simple low-latency real-time certifiable quantum random number generator.

Yanbao Zhang1,2, Hsin-Pin Lo3, Alan Mink4

  • 1NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa, Japan. yanbao.zhang.xf@hco.ntt.co.jp.

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This study introduces a new quantum random number generator that produces certifiable random bits in real-time with low latency. This breakthrough offers high-speed, secure randomness for critical applications.

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Area of Science:

  • Quantum Physics
  • Information Security

Background:

  • Quantum mechanics principles enable intrinsically unpredictable random numbers.
  • Current quantum random number generators often have high latency due to the need for many trials.
  • Applications require high-speed, certifiable randomness.

Purpose of the Study:

  • To demonstrate low-latency, real-time certifiable quantum random number generation.
  • To develop methods for certifying randomness against adversarial imperfections.
  • To create a high-security, high-speed quantum randomness beacon.

Main Methods:

  • Utilizing measurements on photonic time-bin states.
  • Developing certification methods for state preparation and measurement imperfections.
  • Generating blocks of random bits every 0.12 seconds.

Main Results:

  • Achieved low-latency, real-time generation of certifiable random numbers.
  • Generated 8192 random bits every 0.12 seconds.
  • Ensured randomness is certifiable against quantum adversaries with an error bound of 2^-64.

Conclusions:

  • The developed quantum random number generator is suitable for continuous, high-security, and high-speed operation.
  • This technology addresses the latency limitations of previous methods.
  • Enables practical, real-time applications requiring guaranteed randomness.