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Accessing quantum information of field theories with ultracold atoms

Nature Physics volume 19, pages 941–942 (2023)Cite this article

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It’s a long-standing theoretical prediction that mutual information in locally interacting, many-body quantum systems follows an area law. Using cold-atom quantum-field simulators on an atom chip to measure the scaling of von Neumann entropy and mutual information, that prediction is now proved true.

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Fig. 1: Scaling of von Neumann entropies and mutual information for coupled superfluids on an atom chip.

References

  1. Wolf, M. M., Verstraete, F., Hastings, M. B. & Cirac, J. I. Area laws in quantum systems: Mutual information and correlations. Phys. Rev. Lett. 100, 070502 (2008). This paper reports the theoretical prediction of the mutual information area law.

    Article  MathSciNet  MATH  ADS  Google Scholar 

  2. Eisert, J., Cramer, M. & Plenio, M. B. Colloquium: Area laws for the entanglement entropy. Rev. Mod. Phys. 82, 277 (2010). A review article on area laws of many-body quantum systems.

    Article  MathSciNet  MATH  ADS  Google Scholar 

  3. Schweigler, T. et al. Decay and recurrence of non-Gaussian correlations in a quantum many-body system. Nat. Phys. 17, 559–563 (2021). This paper presents a measurement of the dynamics of higher-order correlations in an atom chip experiment.

    Article  Google Scholar 

  4. Gluza, M. et al. Quantum read-out for cold atomic quantum simulators. Commun. Phys. 3, 12 (2020). This paper sets out the tomography procedure for the atom chip experiments.

    Article  Google Scholar 

  5. Horodecki, R., Horodecki, P., Horodecki, M. & Horodecki, K. Quantum entanglement. Rev. Mod. Phys. 81, 865 (2009). A detailed review of quantum entanglement.

    Article  MathSciNet  MATH  ADS  Google Scholar 

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This is a summary of: Tajik, M. et al. Verification of the area law of mutual information in a quantum field simulator. Nat. Phys. https://doi.org/10.1038/s41567-023-02027-1 (2023).

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Accessing quantum information of field theories with ultracold atoms. Nat. Phys. 19, 941–942 (2023). https://doi.org/10.1038/s41567-023-02050-2

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