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On the Purity and Entropy of Mixed Gaussian States

  • Maurice de GossonEmail author
Chapter
Part of the Applied and Numerical Harmonic Analysis book series (ANHA)

Abstract

The notions of purity and entropy play a fundamental role in the theory of density operators. These are nonnegative trace class operators with unit trace. We review and complement some results from a rigorous point of view.

Notes

Acknowledgements

Maurice de Gosson has been financed by the Grant P27773-N23 of the Austrian Research Foundation FWF.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Faculty of Mathematics (NuHAG)University of ViennaViennaAustria

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