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Mathematical physics

Circling exceptional points

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Going around an exceptional point in a full circle can be a non-adiabatic, asymmetric process. This surprising prediction is now confirmed by two separate experiments.

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Figure 1: Dynamically encircling an exceptional point is a non-adiabatic process.
Figure 2: The transfer efficiency as a function of loop time.

References

  1. Doppler, J. et al. Nature http://doi.org/bm33 (2016).

  2. Xu, H. et al. Nature http://doi.org/bm4r (2016).

  3. Milburn, T. J. et al. Phys. Rev. A 92, 052124 (2015).

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  1. Dieter Heiss is in the Department of Physics, University of Stellenbosch, Matieland, 7602, South Africa,

    Dieter Heiss

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  1. Dieter Heiss
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Correspondence to Dieter Heiss.

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Heiss, D. Circling exceptional points. Nature Phys 12, 823–824 (2016). https://doi.org/10.1038/nphys3864

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