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Related Concept Videos

Propagation of Uncertainty from Random Error00:59

Propagation of Uncertainty from Random Error

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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Updated: Jun 8, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Improving zero-error classical communication with entanglement.

Toby S Cubitt1, Debbie Leung, William Matthews

  • 1Department of Mathematics, University of Bristol, Bristol BS8 1TW, United Kingdom.

Physical Review Letters
|September 28, 2010
PubMed
Summary
This summary is machine-generated.

Entangled quantum states can enhance classical communication by increasing the number of messages sent error-free over certain channels. This research explores quantum correlations for zero-error information transmission.

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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Last Updated: Jun 8, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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Published on: September 5, 2019

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Published on: May 30, 2014

Area of Science:

  • Quantum Information Theory
  • Classical Information Theory
  • Quantum Foundations

Background:

  • Classical zero-error information theory quantifies messages transmissible without error over a channel.
  • Entangled states are a key resource in quantum information processing.
  • The Kochen-Specker theorem is a fundamental principle in quantum mechanics.

Purpose of the Study:

  • To investigate if entangled states can increase the zero-error capacity of classical channels.
  • To explore the construction of channels utilizing entanglement for enhanced communication.
  • To connect these findings with pseudotelepathy games and nonsignaling correlations.

Main Methods:

  • Utilizing entangled states shared between sender and receiver.
  • Constructing specific classical channels based on proofs of the Kochen-Specker theorem.
  • Analyzing generalized nonsignaling correlations for information transmission.

Main Results:

  • Demonstrated that entangled states can increase the number of classical messages sent error-free over certain channels.
  • Developed a method to construct such channels using Kochen-Specker theorem proofs.
  • Showed that nonsignaling correlations can enable zero-error transmission even on channels with no unassisted capacity.

Conclusions:

  • Entanglement offers a powerful resource for enhancing classical communication beyond classical limits.
  • The Kochen-Specker theorem provides a framework for constructing quantum-assisted communication channels.
  • Nonsignaling correlations reveal novel possibilities for zero-error information transfer.