Nonnegative mixed states in Weyl–Wigner–Moyal theory
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Date
1988-03-21
Authors
Gracia Bondía, José M.
Várilly Boyle, Joseph C.
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Abstract
We classify the gaussian Wigner functions corresponding to mixed states and show that, unlike the case of pure states, not all nonnegative mixed states are gaussian.
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Keywords
Phase-space quantum mechanics, Weyl-Wigner-Moyal theory, Quantum state
Citation
https://www-sciencedirect-com/science/article/pii/0375960188910353