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Related Experiment Video

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The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm

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Communication Games Reveal Preparation Contextuality.

Alley Hameedi¹, Armin Tavakoli^1,2, Breno Marques³

¹Department of Physics, Stockholm University, S-10691 Stockholm, Sweden.

Physical Review Letters

|December 30, 2017

Summary

This summary is machine-generated.

Communication games reveal preparation contextuality in physical theories. This study proves all quantum states are preparation contextual, confirmed by experiments with three-level quantum systems.

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Area of Science:

Quantum Information Theory
Foundations of Physics
Quantum Foundations

Background:

Communication games model distributed tasks with limited information exchange.
Preparation contextuality is a key feature distinguishing physical theories.
Operational theories provide a framework for analyzing physical systems.

Purpose of the Study:

To demonstrate that communication games can reveal preparation contextuality in operational theories.
To establish a link between communication game statistics and no-signaling correlations.
To prove the preparation contextuality of all mixed quantum states.

Main Methods:

Utilizing a specific family of communication games.
Establishing a correspondence between game statistics and spacelike separated, no-signaling correlations.
Applying theoretical proofs to quantum states of any finite dimension.

Main Results:

Communication games directly reveal the preparation contextuality of operational theories.
A direct correspondence is shown between communication game statistics and no-signaling correlations.
All mixed quantum states, regardless of dimension, are proven to be preparation contextual.

Conclusions:

Communication games are powerful tools for probing the fundamental properties of physical theories.
The preparation contextuality of quantum mechanics is a universal feature of all its mixed states.
Experimental verification using three-level quantum systems confirms the theoretical predictions.