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Related Experiment Video

Updated: May 11, 2026

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

Prepare-and-measure and entanglement simulation beyond qubits.

Mani Zartab1, Giulio Gasbarri2,3, Gael Sentís2,4

  • 1Física Teòrica: Informació i Fenòmens Quàntics, Departament de Física, Universitat Autònoma de Barcelona, Bellaterra, 08193, Barcelona, Spain. mani.zartab@uab.cat.

Scientific Reports
|May 9, 2026
PubMed
Summary

Quantum correlations in higher dimensions can be simulated by classical protocols. This study develops robust approximate protocols, outperforming existing methods in simulations.

Related Experiment Videos

Last Updated: May 11, 2026

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

Area of Science:

  • Quantum Information Theory
  • Classical Simulation of Quantum Systems
  • Quantum Correlations

Background:

  • Quantum theory allows for correlations that classical models cannot replicate without communication.
  • In two-dimensional systems, classical communication can simulate quantum correlations.
  • The possibility of simulation in higher dimensions remains an open question.

Purpose of the Study:

  • To investigate the simulation of quantum correlations in higher dimensions using classical protocols.
  • To develop robust approximate classical protocols for simulating quantum correlations beyond two dimensions.

Main Methods:

  • Identifying key features of exact classical protocols in two-dimensional systems.
  • Constructing approximate classical protocols for higher-dimensional systems.
  • Assessing protocol performance using randomized numerical studies and Total Variation Distance.

Main Results:

  • The developed approach exactly reproduces quantum probability distributions in two-dimensional systems.
  • The new protocols demonstrate high robustness and performance in higher dimensions.
  • The study identifies the most robust protocol among those investigated for higher dimensions.

Conclusions:

  • Classical protocols can effectively simulate quantum correlations in higher dimensions.
  • The findings provide new insights into the analytical structure of classical protocols.
  • This work advances the understanding of the boundary between quantum and classical correlations.