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Exceptional quantum behaviour

Non-Hermitian systems with gain and loss give rise to exceptional points with exceptional properties. An experiment with superconducting qubits now offers a first step towards studying these singularities in the quantum domain.

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  1. Heiss, W. D. J. Phys. Math. Theor. 45, 444016 (2012).

    Article  ADS  Google Scholar 

  2. Naghiloo, M., Abbasi, M., Joglekar, Y. N. & Murch, K. W. Nat. Phys. (2019).

  3. Dalibard, J., Castin, Y. & Mølmer, K. Phys. Rev. Lett. 68, 580–583 (1992).

    Article  ADS  Google Scholar 

  4. Wu, Y. et al. Science 364, 878–880 (2019).

    Article  MathSciNet  ADS  Google Scholar 

  5. Kepesidis, K. V. et al. New J. Phys. 18, 095003 (2016).

    Article  ADS  Google Scholar 

  6. Lau, H.-K. & Clerk, A. A. Nat. Commun. 9, 4320 (2018).

    Article  ADS  Google Scholar 

  7. Zhang, M. et al. Preprint at (2018).

  8. Poli, C., Bellec, M., Kuhl, U., Mortessagne, F. & Schomerus, H. Nat. Commun. 6, 6710 (2015).

    Article  ADS  Google Scholar 

  9. Doppler, J. et al. Nature 537, 76–79 (2016).

    Article  ADS  Google Scholar 

  10. Klauck, F. U. J. et al. Preprint at (2019).

Download references

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Correspondence to Stefan Rotter.

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Rotter, S. Exceptional quantum behaviour. Nat. Phys. 15, 1214–1215 (2019).

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