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Physical Review A

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Phys. Rev. A (1)

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Wigner entropy conjecture and the interference formula in quantum phase space

Zacharie Van Herstraeten ^1,2 and Nicolas J. Cerf^3,1

¹Wyant College of Optical Sciences, The University of Arizona, 1630 E. University Blvd., Tucson, Arizona 85721, USA
²DIENS, École Normale Supérieure, PSL University, CNRS, INRIA (QAT), 45 rue d'Ulm, Paris 75005, France
³Centre for Quantum Information and Communication, École polytechnique de Bruxelles, CP 165/59, Université libre de Bruxelles, 1050 Brussels, Belgium

Upper bounds on the purity of Wigner non-negative quantum states that verify the Wigner entropy conjecture

Qipeng Qian and Christos N. Gagatsos

Phys. Rev. A 114 022408 (2026)

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