Landscapes of Time-Frequency Analysis pp 145-158 | Cite as
On the Purity and Entropy of Mixed Gaussian States
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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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