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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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The atomic mass of an element varies due to the relative ratio of its isotopes. A sample's relative proportion of oxygen isotopes influences its average atomic mass. For instance, if we were to measure the atomic mass of oxygen from a sample, the mass would be a weighted average of the isotopic masses of oxygen in that sample. Since a single sample is not likely to perfectly reflect the true atomic mass of oxygen for all the molecules of oxygen on Earth, the mass we obtain from this...
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Updated: Apr 17, 2026

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On the equivalence between classically verifiable position verification and certified randomness.

Fatih Kaleoglu1,2, Minzhao Liu3, David Cui3,4

  • 1Global Technology Applied Research, JPMorganChase, New York, NY, USA. fatih.kaleoglu@jpmchase.com.

Nature Communications
|April 15, 2026
PubMed
Summary

This study links certified randomness from quantum computers to verifiable position verification. This advances practical applications for near-term quantum devices, making them more useful beyond just sampling tasks.

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Area of Science:

  • Quantum Computing
  • Information Security
  • Classical Cryptography

Background:

  • Gate-based quantum computers offer computational advantages.
  • Random circuit sampling demonstrates quantum advantage but has limited practical utility.
  • Certified randomness generation using random circuits is a recent advancement for near-term quantum devices.

Purpose of the Study:

  • To connect single-device certified randomness to classically verifiable position verification.
  • To develop a method for secure classical communication without long-distance quantum links.
  • To demonstrate a practical application for near-term quantum devices.

Main Methods:

  • Developed a generic compiler to convert certified randomness protocols into verifiable position verification schemes.
  • Extended the protocol to multi-round scenarios.
  • Analyzed the equivalence to a relaxed certified randomness variant.

Main Results:

  • Successfully connected certified randomness to classically verifiable position verification.
  • Demonstrated a generic compiler for this conversion.
  • Showed the practical application of random circuit sampling for verifiable position verification on near-term devices.

Conclusions:

  • Certified randomness from quantum computers can be practically applied to verifiable position verification.
  • This work provides a pathway for secure classical communication using near-term quantum devices.
  • The developed methods offer a tangible application for quantum advantage beyond theoretical speedups.